GetSupportedRenderingFeatures now figures out what the render loop supports, and changes UI accordingly.

Assets/ScriptableRenderLoop/ForwardRenderLoop/ForwardRenderLoop.cs

 
 			// Post effects
 		}
+
+		#if UNITY_EDITOR
+		public override UnityEditor.SupportedRenderingFeatures GetSupportedRenderingFeatures()
+		{
+			var features = new UnityEditor.SupportedRenderingFeatures();
+
+			features.reflectionProbe = UnityEditor.SupportedRenderingFeatures.ReflectionProbe.Rotation;
+
+			return features;
+		}
+		#endif
 	}
 }

Assets/ScriptableRenderLoop/ScriptableRenderLoop.cs

 	public abstract class ScriptableRenderLoop : ScriptableObject
 	{
 		public abstract void Render(Camera[] cameras, RenderLoop renderLoop);
+
+		#if UNITY_EDITOR
+		public virtual UnityEditor.SupportedRenderingFeatures GetSupportedRenderingFeatures() { return new UnityEditor.SupportedRenderingFeatures(); }
+		#endif
 	}
 }

Assets/ScriptableRenderLoop/ScriptableRenderLoopPicker.cs

 	[ExecuteInEditMode]
 	public class ScriptableRenderLoopPicker : MonoBehaviour
 	{
-		public ScriptableRenderLoop renderLoop;
+		public ScriptableRenderLoop renderloop
+		{
+			get { return m_RenderLoop; }
+			set { m_RenderLoop = value; }
+		}
+
+		[SerializeField]
+		private ScriptableRenderLoop m_RenderLoop;
+
+			SyncRenderingFeatures();
+		}
+
+		void OnValidate()
+		{
+			SyncRenderingFeatures();
+		}
+
+		void SyncRenderingFeatures ()
+		{
+			if (m_RenderLoop != null && isActiveAndEnabled)
+				UnityEditor.SupportedRenderingFeatures.active = m_RenderLoop.GetSupportedRenderingFeatures();
+			else
+				UnityEditor.SupportedRenderingFeatures.active = UnityEditor.SupportedRenderingFeatures.Default;
+
+			#if UNITY_EDITOR
+			UnityEditor.SupportedRenderingFeatures.active = UnityEditor.SupportedRenderingFeatures.Default;
+			#endif
-			if (renderLoop == null)
+			if (m_RenderLoop == null)
-			renderLoop.Render (cameras, loop);
+			m_RenderLoop.Render (cameras, loop);
-
 	}
 }

Assets/TestScenes/ForwardRenderLoop/ForwardRenderLoop.unity

   m_Script: {fileID: 11500000, guid: 92bb16b4ee20841929b24d6bd771738d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  renderLoop: {fileID: 11400000, guid: 873753be6b0da44d58b061c5ec3d12bc, type: 2}
+  m_RenderLoop: {fileID: 11400000, guid: 873753be6b0da44d58b061c5ec3d12bc, type: 2}
 --- !u!1 &1758207072
 GameObject:
   m_ObjectHideFlags: 0
   m_PrefabParentObject: {fileID: 0}
   m_PrefabInternal: {fileID: 0}
   m_GameObject: {fileID: 1810843056}
-  m_LocalRotation: {x: -0.26871023, y: -0.31149623, z: 0.872998, w: 0.26199108}
+  m_LocalRotation: {x: -0.26871026, y: -0.31149626, z: 0.87299806, w: 0.2619911}
   m_LocalPosition: {x: 28.75, y: 9.26, z: 7.88}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children: []