Static Backgrounds
Let's say I have a scene where I want the background to remain the same but characters in the scene to change (either entirely or just their pose). As far as I can tell it is currently not possible to keep the background (park, building, office) from having to be redrawn if you want to do this. You can duplicate the scene, but then everything starts over with a fresh drawing. Some kind of static background feature would be useful that characters, text and props could be drawn and erased against.