diff --git a/api/pom.xml b/api/pom.xml
index c5d10af0b..4ad4fcb9b 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>luckperms</artifactId>
         <groupId>me.lucko.luckperms</groupId>
-        <version>4.0-SNAPSHOT</version>
+        <version>4.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/api/src/main/java/me/lucko/luckperms/api/Node.java b/api/src/main/java/me/lucko/luckperms/api/Node.java
index f6bb02d7e..b845853e7 100644
--- a/api/src/main/java/me/lucko/luckperms/api/Node.java
+++ b/api/src/main/java/me/lucko/luckperms/api/Node.java
@@ -32,22 +32,59 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
+import java.util.stream.Stream;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;
 
 /**
- * Represents a permission node.
+ * Represents a LuckPerms "node".
  *
- * <p>All implementations of this interface must be immutable.</p>
+ * <p>The {@link Node} class encapsulates more than just permission assignments.
+ * Nodes are used to store data about inherited groups, as well as assigned
+ * prefixes, suffixes and meta values.</p>
  *
- * <p>Use the {@link NodeFactory} to obtain and construct instances.</p>
+ * <p>Combining these various states into one object (a "node") means that a
+ * holder only has to have one type of data set (a set of nodes) in order to
+ * take on various properties.</p>
  *
+ * <p>It is recommended that users of the API make use of {@link Stream}s
+ * to manipulate data and obtain the required information.</p>
+ *
+ * <p>This interface provides a number of methods to read the attributes of the
+ * node, as well as methods to query and extract additional state and properties
+ * from these settings.</p>
+ *
+ * <p>Nodes have the following attributes:</p>
+ * <p></p>
+ * <ul>
+ *     <li>{@link #getPermission() permission} - the actual permission string</li>
+ *     <li>{@link #getValuePrimitive() value} - the value of the node (false for negated)</li>
+ *     <li>{@link #isOverride() override} - if the node is marked as having special priority over other nodes</li>
+ *     <li>{@link #getServer() server} - the specific server where this node should apply</li>
+ *     <li>{@link #getWorld() world} - the specific world where this node should apply</li>
+ *     <li>{@link #getContexts() context} - the additional contexts required for this node to apply </li>
+ *     <li>{@link #getExpiry() expiry} - the time when this node should expire</li>
+ * </ul>
+ *
+ * <p>Nodes can also fall into the following sub categories.</p>
+ * <p></p>
+ * <ul>
+ *     <li>normal - just a regular permission</li>
+ *     <li>{@link #isGroupNode() group node} - a "group node" marks that the holder should inherit data from another group</li>
+ *     <li>{@link #isPrefix() prefix} - represents an assigned prefix</li>
+ *     <li>{@link #isSuffix() suffix} - represents an assigned suffix</li>
+ *     <li>{@link #isMeta() meta} - represents an assigned meta option</li>
+ * </ul>
+ *
+ * <p>The core node state must be immutable in all implementations.</p>
+ *
+ * @see NodeFactory for obtaining and constructing instances.
  * @since 2.6
  */
 @Immutable
-public interface Node extends Map.Entry<String, Boolean> {
+public interface Node {
 
     /**
      * Gets the permission string
@@ -64,7 +101,6 @@ public interface Node extends Map.Entry<String, Boolean> {
      *
      * @return the permission's value
      */
-    @Override
     @Nonnull
     default Boolean getValue() {
         return getValuePrimitive();
@@ -394,6 +430,15 @@ public interface Node extends Map.Entry<String, Boolean> {
         return equals(other, StandardNodeEquality.IGNORE_VALUE_OR_IF_TEMPORARY);
     }
 
+    /**
+     * Constructs a new builder initially containing the current properties of
+     * this node.
+     *
+     * @return a new builder
+     * @since 4.1
+     */
+    Builder toBuilder();
+
     /**
      * Builds a Node instance
      */
diff --git a/bukkit/pom.xml b/bukkit/pom.xml
index cbe9bc382..1c5bda5ad 100644
--- a/bukkit/pom.xml
+++ b/bukkit/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>luckperms</artifactId>
         <groupId>me.lucko.luckperms</groupId>
-        <version>4.0-SNAPSHOT</version>
+        <version>4.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/bungee/pom.xml b/bungee/pom.xml
index 3ea490153..f02996a3e 100644
--- a/bungee/pom.xml
+++ b/bungee/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>luckperms</artifactId>
         <groupId>me.lucko.luckperms</groupId>
-        <version>4.0-SNAPSHOT</version>
+        <version>4.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/common/pom.xml b/common/pom.xml
index a1347597a..086c8301f 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>luckperms</artifactId>
         <groupId>me.lucko.luckperms</groupId>
-        <version>4.0-SNAPSHOT</version>
+        <version>4.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/common/src/main/java/me/lucko/luckperms/common/api/delegates/misc/ApiNodeFactory.java b/common/src/main/java/me/lucko/luckperms/common/api/delegates/misc/ApiNodeFactory.java
index 0614d327d..bc457ea9f 100644
--- a/common/src/main/java/me/lucko/luckperms/common/api/delegates/misc/ApiNodeFactory.java
+++ b/common/src/main/java/me/lucko/luckperms/common/api/delegates/misc/ApiNodeFactory.java
@@ -52,8 +52,7 @@ public final class ApiNodeFactory implements me.lucko.luckperms.api.NodeFactory
     @Nonnull
     @Override
     public Node.Builder newBuilderFromExisting(@Nonnull Node other) {
-        Objects.requireNonNull(other, "other");
-        return NodeFactory.builder(other);
+        return Objects.requireNonNull(other, "other").toBuilder();
     }
 
     @Nonnull
diff --git a/common/src/main/java/me/lucko/luckperms/common/api/delegates/misc/ApiPlatformInfo.java b/common/src/main/java/me/lucko/luckperms/common/api/delegates/misc/ApiPlatformInfo.java
index a0a66ca3f..068a8ad16 100644
--- a/common/src/main/java/me/lucko/luckperms/common/api/delegates/misc/ApiPlatformInfo.java
+++ b/common/src/main/java/me/lucko/luckperms/common/api/delegates/misc/ApiPlatformInfo.java
@@ -50,7 +50,7 @@ public class ApiPlatformInfo implements PlatformInfo {
 
     @Override
     public double getApiVersion() {
-        return 4.0;
+        return 4.1;
     }
 
     @Nonnull
diff --git a/common/src/main/java/me/lucko/luckperms/common/locale/CommandSpec.java b/common/src/main/java/me/lucko/luckperms/common/locale/CommandSpec.java
index 07bfc8dde..dde85bdc4 100644
--- a/common/src/main/java/me/lucko/luckperms/common/locale/CommandSpec.java
+++ b/common/src/main/java/me/lucko/luckperms/common/locale/CommandSpec.java
@@ -55,7 +55,7 @@ public enum CommandSpec {
             )
     ),
     DEBUG("Produce debugging output", "/%s debug"),
-    VERBOSE("Manage verbose permission checking", "/%s verbose <true|false> [filter]",
+    VERBOSE("Manage verbose permission checking", "/%s verbose <on|record|off|paste> [filter]",
             Arg.list(
                     Arg.create("on|record|off|paste", true, "whether to enable/disable logging, or to paste the logged output"),
                     Arg.create("filter", false, "the filter to match entries against")
diff --git a/common/src/main/java/me/lucko/luckperms/common/model/PermissionHolder.java b/common/src/main/java/me/lucko/luckperms/common/model/PermissionHolder.java
index 4c3928d40..10e37343f 100644
--- a/common/src/main/java/me/lucko/luckperms/common/model/PermissionHolder.java
+++ b/common/src/main/java/me/lucko/luckperms/common/model/PermissionHolder.java
@@ -686,7 +686,7 @@ public abstract class PermissionHolder {
                     Node previous = existing.get();
 
                     // Create a new node with the same properties, but add the expiry dates together
-                    Node newNode = NodeFactory.builder(node).setExpiry(previous.getExpiryUnixTime() + node.getSecondsTilExpiry()).build();
+                    Node newNode = node.toBuilder().setExpiry(previous.getExpiryUnixTime() + node.getSecondsTilExpiry()).build();
 
                     // Remove the old node & add the new one.
                     ImmutableCollection<Node> before = getEnduringNodes().values();
diff --git a/common/src/main/java/me/lucko/luckperms/common/node/ForwardingNode.java b/common/src/main/java/me/lucko/luckperms/common/node/ForwardingNode.java
index 74c859b40..18c58d60b 100644
--- a/common/src/main/java/me/lucko/luckperms/common/node/ForwardingNode.java
+++ b/common/src/main/java/me/lucko/luckperms/common/node/ForwardingNode.java
@@ -230,12 +230,7 @@ public abstract class ForwardingNode implements Node {
     }
 
     @Override
-    public String getKey() {
-        return delegate().getKey();
-    }
-
-    @Override
-    public Boolean setValue(Boolean value) {
-        return delegate().setValue(value);
+    public Builder toBuilder() {
+        return delegate().toBuilder();
     }
 }
diff --git a/common/src/main/java/me/lucko/luckperms/common/node/ImmutableNode.java b/common/src/main/java/me/lucko/luckperms/common/node/ImmutableNode.java
index 4b3e3c357..60b027dd0 100644
--- a/common/src/main/java/me/lucko/luckperms/common/node/ImmutableNode.java
+++ b/common/src/main/java/me/lucko/luckperms/common/node/ImmutableNode.java
@@ -162,6 +162,11 @@ public final class ImmutableNode implements Node {
         this.hashCode = calculateHashCode();
     }
 
+    @Override
+    public Builder toBuilder() {
+        return new NodeBuilder(this);
+    }
+
     @Nonnull
     @Override
     public String getPermission() {
@@ -443,16 +448,6 @@ public final class ImmutableNode implements Node {
         public abstract boolean areEqual(@Nonnull ImmutableNode o1, @Nonnull ImmutableNode o2);
     }
 
-    @Override
-    public Boolean setValue(Boolean value) {
-        throw new UnsupportedOperationException();
-    }
-
-    @Override
-    public String getKey() {
-        return getPermission();
-    }
-
     private static String internString(String s) {
         return s == null ? null : s.intern();
     }
diff --git a/common/src/main/java/me/lucko/luckperms/common/node/NodeFactory.java b/common/src/main/java/me/lucko/luckperms/common/node/NodeFactory.java
index a55d7838d..a47888bca 100644
--- a/common/src/main/java/me/lucko/luckperms/common/node/NodeFactory.java
+++ b/common/src/main/java/me/lucko/luckperms/common/node/NodeFactory.java
@@ -62,10 +62,6 @@ public final class NodeFactory {
         return new NodeBuilder(s);
     }
 
-    public static Node.Builder builder(Node other) {
-        return new NodeBuilder(other);
-    }
-
     public static Node.Builder buildGroupNode(String groupName) {
         return new NodeBuilder(groupNode(groupName));
     }
diff --git a/nukkit/pom.xml b/nukkit/pom.xml
index ad5f48393..ef8a1bb7d 100644
--- a/nukkit/pom.xml
+++ b/nukkit/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>luckperms</artifactId>
         <groupId>me.lucko.luckperms</groupId>
-        <version>4.0-SNAPSHOT</version>
+        <version>4.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/pom.xml b/pom.xml
index 9ffdde9a2..3fd1fb0b4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>me.lucko.luckperms</groupId>
     <artifactId>luckperms</artifactId>
-    <version>4.0-SNAPSHOT</version>
+    <version>4.1-SNAPSHOT</version>
 
     <modules>
         <module>api</module>
diff --git a/sponge/pom.xml b/sponge/pom.xml
index 0e9e33cbe..b08931a00 100644
--- a/sponge/pom.xml
+++ b/sponge/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>luckperms</artifactId>
         <groupId>me.lucko.luckperms</groupId>
-        <version>4.0-SNAPSHOT</version>
+        <version>4.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/sponge/sponge-service-api6/pom.xml b/sponge/sponge-service-api6/pom.xml
index a2cd24609..edfc024de 100644
--- a/sponge/sponge-service-api6/pom.xml
+++ b/sponge/sponge-service-api6/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>luckperms</artifactId>
         <groupId>me.lucko.luckperms</groupId>
-        <version>4.0-SNAPSHOT</version>
+        <version>4.1-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/sponge/sponge-service-api7/pom.xml b/sponge/sponge-service-api7/pom.xml
index 6576f4661..dd134ae26 100644
--- a/sponge/sponge-service-api7/pom.xml
+++ b/sponge/sponge-service-api7/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>luckperms</artifactId>
         <groupId>me.lucko.luckperms</groupId>
-        <version>4.0-SNAPSHOT</version>
+        <version>4.1-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/sponge/sponge-service/pom.xml b/sponge/sponge-service/pom.xml
index ba12e90dc..dc4cc16a9 100644
--- a/sponge/sponge-service/pom.xml
+++ b/sponge/sponge-service/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>luckperms</artifactId>
         <groupId>me.lucko.luckperms</groupId>
-        <version>4.0-SNAPSHOT</version>
+        <version>4.1-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>