Idea: Invisible space tool, what it does & how it should be implemented :) I'll explain

                                                    Idea: Invisible space tool:
Imagine player goes into tools area & selects a tool called invisible space tool, at this point there imp will be holding what appears to be a holographic looking block. This holographic looking block is square but can be changed in size to fit players needs. Player can alter its size while holding it & even use stretch tool to make it bigger or smaller from it's sides. This material is a square or rectangle of any size but no other shape. Once placed down the player can then open the materials tweak menu. The tweak menu gives the player the ability to turn On or Off the functionality of any or all sides of the invisibility material individually for any # of objects inside of its space. It would look like this 
__________________________________________________________________________________
1: Object (Labeled-Sculpt/Painting/Both-or whatever label player gave it).
 A: Top of Material (On/Off). B: Bottom of Material (On/Off). C: Left side of Material (On/Off). D: Right side of Material (On/Off). E: Front of Material (On/Off. F: Back of Material (On/Off). 
__________________________________________________________________________________
2: Object (Labeled-Sculpt/Painting/Both-or whatever label player gave it).
 A: Top of Material (On/Off). B: Bottom of Material (On/Off). C: Left side of Material (On/Off). D: Right side of Material (On/Off). E: Front of Material (On/Off. F: Back of Material (On/Off). 
__________________________________________________________________________________
3: Object (Labeled-Sculpt/Painting/Both-or whatever label player gave it).
 A: Top of Material (On/Off). B: Bottom of Material (On/Off). C: Left side of Material (On/Off). D: Right side of Material (On/Off). E: Front of Material (On/Off. F: Back of Material (On/Off). 
__________________________________________________________________________________
  Your probably asking by now what this will end up looking like in play mode. This is where things get EPIC. First lets imagine Object 1 is a Flower, Object 2 is a Picture frame & Object 3 is the back of the picture frame. Now imagine Object 1 (The Flower) is set so there is only 1 side of the invisibility material turned Off, for this example lets say it's the Front side. If you were to look at the flower in play mode you would see the flower from the front side, but if you moved around abject it would totally disappear from all other sides of view. Now lets imagine Object 2 (The Picture frame) is set so All sides of invisibility material are turned Off. This means Object 2 (The Picture frame) will stay visible from all sides of view. Now lets say Object 3 (The Back panel of Picture frame) is set so only the Front side of the invisibility material is turned On. This means while looking at it from the front player won't see back panel of picture frame but will still see the Flower & frame around it, But when player views from other sides they will see the Picture frame and it's back panel but not Flower. Wallah :) 
  In a nutshell it's a tool that tells the game what is allowed to be seen & what is not allowed to be seen from angle of view.  P.S I LOVE DREAMS