A great use for the overlay is an image overlaying the all the buttons. The ability to toggle on and off during editing is key.
If I am correct, currently there is one overlay that covers all the paged workspaces. Switch workspaces, the overlay image is the same.
Is it possible to have individual overlays for each of the workspaces? Change the page, change the overlay image? If I overlay a standard image on top of button the fact that it is in front during editing makes the button behind unselectable.
Thanks for any hints to put a full screen image on top and still be able to edit elements behind.