Layer 0

I’d really like to see more sections between the background and game layer, but at the very least, would it be difficult to add a layer 0 to the game layer? If I’m standing on 2, 3 would be in front, 1 would be behind, and 0 would be clouds and buildings before the background. This would be nice, because of the extra depth illusion and ability to have moving clouds go behind back walls.