Implemented feature, but needs commenting before finishing

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Assets/Editor Add On/Custom Attributes/Hide in Prefab.meta

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Assets/Editor Add On/Custom Attributes/Hide in Prefab/Examples/HideInPrefabExample.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class HideInPrefabExample : MonoBehaviour {
+
+    [Header ("Drag Me into scene to show hidden properties.")]
+
+
+    [HideInPrefab]
+    public float HiddenFloat = 5;   //Hidden in prefab inspector
+    public float ShownFloat = 6;    //Not hidden in prefab inspector
+    [HideInInspector]
+    public float AlwaysHiddenFloat = 7; //Always hidden (Unity's default implementation)
+
+    [HideInPrefab]
+    public GameObject HiddenGameObject; //Hidden in Prefab inspector
+    public GameObject ShownGameObject;  //NotHidden in Prefab inspector
+}

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Assets/Editor Add On/Custom Attributes/Hide in Prefab/Scripts.meta

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Assets/Editor Add On/Custom Attributes/Hide in Prefab/Scripts/HideInPrefabAttribute.cs

@@ -0,0 +1,32 @@
+using UnityEngine;
+
+#if UNITY_EDITOR
+using UnityEditor;
+#endif
+
+public class HideInPrefabAttribute : PropertyAttribute
+{
+
+}
+
+[CustomPropertyDrawer(typeof(HideInPrefabAttribute))]
+public class HideInPrefabDrawer : PropertyDrawer
+{
+
+    public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+    {
+        PrefabType type = PrefabUtility.GetPrefabType(property.serializedObject.targetObject);
+
+        if (type != PrefabType.Prefab)
+            EditorGUI.PropertyField(position, property, label);
+    }
+
+    public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
+    {
+        PrefabType type = PrefabUtility.GetPrefabType(property.serializedObject.targetObject);
+        if (type == PrefabType.Prefab)
+            return 0;
+
+        return base.GetPropertyHeight(property, label);
+    }
+}

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