diff --git a/IPA.Loader/IPA.Loader.csproj b/IPA.Loader/IPA.Loader.csproj
index fe782f84..18a2f765 100644
--- a/IPA.Loader/IPA.Loader.csproj
+++ b/IPA.Loader/IPA.Loader.csproj
@@ -108,9 +108,7 @@
     <Compile Include="Logging\Printers\ColorlessConsolePrinter.cs" />
     <Compile Include="Logging\Printers\PluginSubLogPrinter.cs" />
     <Compile Include="Logging\StdoutInterceptor.cs" />
-    <Compile Include="PluginInterfaces\BeatSaber\IBeatSaberPlugin.cs" />
     <Compile Include="PluginInterfaces\BeatSaber\IDisablablePlugin.cs" />
-    <Compile Include="PluginInterfaces\BeatSaber\IEnhancedBeatSaberPlugin.cs" />
     <Compile Include="PluginInterfaces\BeatSaber\IEnhancedPlugin.cs" />
     <Compile Include="PluginInterfaces\BeatSaber\IPlugin.cs" />
     <Compile Include="PluginInterfaces\IGenericEnhancedPlugin.cs" />
diff --git a/IPA.Loader/Loader/Composite/CompositeBSPlugin.cs b/IPA.Loader/Loader/Composite/CompositeBSPlugin.cs
index 9b0a1b9a..70bc6999 100644
--- a/IPA.Loader/Loader/Composite/CompositeBSPlugin.cs
+++ b/IPA.Loader/Loader/Composite/CompositeBSPlugin.cs
@@ -5,11 +5,7 @@ using Logger = IPA.Logging.Logger;
 
 namespace IPA.Loader.Composite
 {
-    internal class CompositeBSPlugin :
-#pragma warning disable CS0618 // Type or member is obsolete
-        IBeatSaberPlugin,
-#pragma warning restore CS0618 // Type or member is obsolete
-        _IPlugin
+    internal class CompositeBSPlugin
     {
         private readonly IEnumerable<PluginLoader.PluginInfo> plugins;
 
@@ -19,11 +15,6 @@ namespace IPA.Loader.Composite
             this.plugins = plugins;
         }
 
-        [Obsolete]
-        public void OnApplicationStart() {
-            Invoke(plugin => (plugin.Plugin as IBeatSaberPlugin)?.OnApplicationStart());
-        }
-
         public void OnApplicationQuit() {
             Invoke(plugin => plugin.Plugin.OnApplicationQuit());
         }
diff --git a/IPA.Loader/Loader/PluginComponent.cs b/IPA.Loader/Loader/PluginComponent.cs
index 88457e79..4663468a 100644
--- a/IPA.Loader/Loader/PluginComponent.cs
+++ b/IPA.Loader/Loader/PluginComponent.cs
@@ -34,9 +34,6 @@ namespace IPA.Loader
             gameObject.AddComponent<Updating.BeatMods.Updater>();
 #endif
 
-#pragma warning disable CS0612 // Type or member is obsolete
-            bsPlugins.OnApplicationStart();
-#pragma warning restore CS0612 // Type or member is obsolete
             ipaPlugins.OnApplicationStart();
             
             SceneManager.activeSceneChanged += OnActiveSceneChanged;
diff --git a/IPA.Loader/Loader/PluginLoader.cs b/IPA.Loader/Loader/PluginLoader.cs
index e7b0eff6..23a8a79a 100644
--- a/IPA.Loader/Loader/PluginLoader.cs
+++ b/IPA.Loader/Loader/PluginLoader.cs
@@ -124,7 +124,7 @@ namespace IPA.Loader
         /// </summary>
         public class PluginInfo
         {
-            internal _IPlugin Plugin { get; set; }
+            internal IPlugin Plugin { get; set; }
 
             /// <summary>
             /// Metadata for the plugin.
@@ -196,14 +196,14 @@ namespace IPA.Loader
 
             foreach (var plugin in plugins)
             {
-                try
+                var metadata = new PluginMetadata
                 {
-                    var metadata = new PluginMetadata
-                    {
-                        File = new FileInfo(Path.Combine(BeatSaber.PluginsPath, plugin)),
-                        IsSelf = false
-                    };
+                    File = new FileInfo(Path.Combine(BeatSaber.PluginsPath, plugin)),
+                    IsSelf = false
+                };
 
+                try
+                {
                     var pluginModule = AssemblyDefinition.ReadAssembly(plugin, new ReaderParameters
                     {
                        ReadingMode = ReadingMode.Immediate,
@@ -244,7 +244,7 @@ namespace IPA.Loader
                         if (type.Namespace != pluginNs) continue;
 
                         // TODO: change this to just IPlugin
-                        if (type.HasInterface(typeof(_IPlugin).FullName))
+                        if (type.HasInterface(typeof(IPlugin).FullName))
                         {
                             metadata.PluginType = type;
                             break;
@@ -264,6 +264,7 @@ namespace IPA.Loader
                 {
                     Logger.loader.Error($"Could not load data for plugin {Path.GetFileName(plugin)}");
                     Logger.loader.Error(e);
+                    ignoredPlugins.Add(metadata);
                 }
             }
 
@@ -642,7 +643,7 @@ namespace IPA.Loader
                 }
 
                 var type = meta.Assembly.GetType(meta.PluginType.FullName);
-                var instance = Activator.CreateInstance(type) as _IPlugin;
+                var instance = Activator.CreateInstance(type) as IPlugin;
 
                 info.Metadata = meta;
                 info.Plugin = instance;
diff --git a/IPA.Loader/Loader/PluginManager.cs b/IPA.Loader/Loader/PluginManager.cs
index a26c6385..df8fd3c5 100644
--- a/IPA.Loader/Loader/PluginManager.cs
+++ b/IPA.Loader/Loader/PluginManager.cs
@@ -32,7 +32,7 @@ namespace IPA.Loader
         /// <summary>
         /// An <see cref="IEnumerable"/> of new Beat Saber plugins
         /// </summary>
-        internal static IEnumerable<_IPlugin> BSPlugins => (_bsPlugins ?? throw new InvalidOperationException()).Select(p => p.Plugin);
+        internal static IEnumerable<IPlugin> BSPlugins => (_bsPlugins ?? throw new InvalidOperationException()).Select(p => p.Plugin);
         private static List<PluginInfo> _bsPlugins;
         internal static IEnumerable<PluginInfo> BSMetas => _bsPlugins;
 
@@ -324,11 +324,17 @@ namespace IPA.Loader
             // initialize BSIPA plugins first
             _bsPlugins.AddRange(PluginLoader.LoadPlugins());
 
+            var metadataPaths = PluginsMetadata.Select(m => m.File.FullName).ToList();
+            var ignoredPaths = ignoredPlugins.Select(m => m.File.FullName).ToList();
+            var disabledPaths = DisabledPlugins.Select(m => m.File.FullName).ToList();
+
             //Copy plugins to .cache
             string[] originalPlugins = Directory.GetFiles(pluginDirectory, "*.dll");
             foreach (string s in originalPlugins)
             {
-                if (PluginsMetadata.Select(m => m.File.FullName).Contains(s)) continue;
+                if (metadataPaths.Contains(s)) continue;
+                if (ignoredPaths.Contains(s)) continue;
+                if (disabledPaths.Contains(s)) continue;
                 string pluginCopy = Path.Combine(cacheDir, Path.GetFileName(s));
 
                 #region Fix assemblies for refactor
diff --git a/IPA.Loader/PluginInterfaces/BeatSaber/IBeatSaberPlugin.cs b/IPA.Loader/PluginInterfaces/BeatSaber/IBeatSaberPlugin.cs
deleted file mode 100644
index 2d16355e..00000000
--- a/IPA.Loader/PluginInterfaces/BeatSaber/IBeatSaberPlugin.cs
+++ /dev/null
@@ -1,20 +0,0 @@
-using System;
-// ReSharper disable CheckNamespace
-
-namespace IPA
-{
-    /// <summary>
-    /// Interface for Beat Saber plugins. Every class that implements this will be loaded if the DLL is placed at
-    /// data/Managed/Plugins.
-    /// </summary>
-    [Obsolete("Use IPA.IPlugin instead")]
-    public interface IBeatSaberPlugin : _IPlugin
-    {
-        /// <summary>
-        /// Gets invoked when the application is started.
-        /// 
-        /// THIS EVENT WILL NOT BE GUARANTEED TO FIRE. USE Init OR <see cref="IPlugin.OnEnable"/> INSTEAD.
-        /// </summary>
-        void OnApplicationStart();
-    }
-}
diff --git a/IPA.Loader/PluginInterfaces/BeatSaber/IDisablablePlugin.cs b/IPA.Loader/PluginInterfaces/BeatSaber/IDisablablePlugin.cs
index fdabfd74..af28e0a9 100644
--- a/IPA.Loader/PluginInterfaces/BeatSaber/IDisablablePlugin.cs
+++ b/IPA.Loader/PluginInterfaces/BeatSaber/IDisablablePlugin.cs
@@ -21,7 +21,7 @@
         /// from events. After this is called there should be no lingering effects of the mod.
         /// </summary>
         /// <remarks>
-        /// This will get called at shutdown, after <see cref="_IPlugin.OnApplicationQuit"/>, as well as when the
+        /// This will get called at shutdown, after <see cref="IPlugin.OnApplicationQuit"/>, as well as when the
         /// plugin is disabled at runtime.
         /// </remarks>
         void OnDisable();
diff --git a/IPA.Loader/PluginInterfaces/BeatSaber/IEnhancedBeatSaberPlugin.cs b/IPA.Loader/PluginInterfaces/BeatSaber/IEnhancedBeatSaberPlugin.cs
deleted file mode 100644
index e83ce7f3..00000000
--- a/IPA.Loader/PluginInterfaces/BeatSaber/IEnhancedBeatSaberPlugin.cs
+++ /dev/null
@@ -1,12 +0,0 @@
-// ReSharper disable CheckNamespace
-namespace IPA
-{
-    /// <inheritdoc cref="IBeatSaberPlugin" />
-    /// <summary>
-    /// An enhanced version of a standard BeatSaber plugin.
-    /// </summary>
-    [System.Obsolete]
-    public interface IEnhancedBeatSaberPlugin : IBeatSaberPlugin, IGenericEnhancedPlugin
-    {
-    }
-}
diff --git a/IPA.Loader/PluginInterfaces/BeatSaber/IPlugin.cs b/IPA.Loader/PluginInterfaces/BeatSaber/IPlugin.cs
index 60cbce66..b7ea8e88 100644
--- a/IPA.Loader/PluginInterfaces/BeatSaber/IPlugin.cs
+++ b/IPA.Loader/PluginInterfaces/BeatSaber/IPlugin.cs
@@ -6,7 +6,7 @@ namespace IPA
     /// Interface for BSIPA plugins. Every class that implements this will be loaded if the DLL is placed at
     /// &lt;install dir&gt;/Plugins.
     /// </summary>
-    public interface IPlugin : _IPlugin
+    public interface IPlugin
     {
         /// <summary>
         /// Called when a plugin is enabled. This is where you should set up Harmony patches and the like.
@@ -18,11 +18,7 @@ namespace IPA
         /// Init will only ever be called once.
         /// </remarks>
         void OnEnable();
-    }
-    /// <summary>
-    /// An interface for providing compatability with BSIPA 3.x.x. Do not use.
-    /// </summary>
-    public interface _IPlugin {
+
         /// <summary>
         /// Gets invoked when the application is closed.
         /// </summary>