All GUI compile errors fixed, switched to excludes over includes in gradle build and lots, LOTS of more fixes.

src/main/java/appeng/client/render/SimpleModelLoader.java

@@ -0,0 +1,32 @@
+package appeng.client.render;
+
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonObject;
+import net.minecraft.resources.IResourceManager;
+import net.minecraftforge.client.model.IModelLoader;
+import net.minecraftforge.client.model.geometry.IModelGeometry;
+
+import java.util.function.Supplier;
+
+/**
+ * A quaint model loader that does not accept any additional parameters in JSON.
+ */
+public class SimpleModelLoader<T extends IModelGeometry<T>> implements IModelLoader<T> {
+
+    private final Supplier<T> factory;
+
+    public SimpleModelLoader(Supplier<T> factory) {
+        this.factory = factory;
+    }
+
+    @Override
+    public void onResourceManagerReload(IResourceManager resourceManager) {
+
+    }
+
+    @Override
+    public T read(JsonDeserializationContext deserializationContext, JsonObject modelContents) {
+        return factory.get();
+    }
+
+}