I think this option would be an awesome way to expand the possibilities for Skin Sets. It would be completely optional. For example, one could make a skin set based on a Mega Man game. Each world would end with a different Robot Master to fight and the Map Skins would be based on a specific Robot Master in each world. I don't know how difficult it would be to program, but I would think it would be similar to how each world can have a different theme too.