Layers Option

It would be really nice if we could optionally add entire additional layers. To be enabled from the settings window for a page, and then having an icon in the toolbar that both the GM and Players can use to change layer view. Each would have their own Token/Map/GM layer, but they would be laid on top of each other and the lower layers would be faded out 50% or something (towards the background color) but otherwise visible. (other than FoW of course) Then for key bindings, the basic number keys could swap between layer view, and shift+number keys to move selected elements to different layers.

I like customizeable key bindings in options, however, not sure on the multiple layers. I like the simplicity now. When would you use other layers?

I did say I think it should be an option that's disabled by default, because simplicity is nice for people who don't want to use it, and it would be useful for multiple floors of buildings, dungeons, or whatever else (like a hill that players could walk on top of, or go through a tunnel underground)