responding to more PR feedback

com.unity.perception/Runtime/Randomization/Randomizers/Randomizer.cs

 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using UnityEngine.Experimental.Perception.Randomization.Parameters;
 using UnityEngine.Experimental.Perception.Randomization.Scenarios;
 
     {
         bool m_PreviouslyEnabled;
         // ReSharper disable once InconsistentNaming
-        internal ScenarioBase m_Scenario;
+        ScenarioBase m_Scenario;
-        internal RandomizerTagManager m_TagManager;
+        RandomizerTagManager m_TagManager;
 
         [HideInInspector, SerializeField] internal bool collapsed;
 
         /// OnUpdate is executed every frame for enabled Randomizers
         /// </summary>
         protected virtual void OnUpdate() { }
+
+        internal void Initialize(ScenarioBase parentScenario, RandomizerTagManager parentTagManager)
+        {
+            m_Scenario = parentScenario;
+            m_TagManager = parentTagManager;
+        }
 
         internal virtual void Create()
         {

com.unity.perception/Runtime/Randomization/Scenarios/ScenarioBase.cs

             activeScenario = this;
             OnAwake();
             foreach (var randomizer in m_Randomizers)
-            {
-                randomizer.m_Scenario = this;
-                randomizer.m_TagManager = tagManager;
-            }
+                randomizer.Initialize(this, tagManager);
             foreach (var randomizer in m_Randomizers)
                 randomizer.Create();
             ValidateParameters();
                         $"Two Randomizers of the same type ({randomizerType.Name}) cannot both be active simultaneously");
             var newRandomizer = (Randomizer)Activator.CreateInstance(randomizerType);
             m_Randomizers.Add(newRandomizer);
-            newRandomizer.m_Scenario = this;
-            newRandomizer.m_TagManager = tagManager;
+            newRandomizer.Initialize(this, tagManager);
             newRandomizer.Create();
             return newRandomizer;
         }