Well, i'm doing a tool similar to the PixaTool that i finished, and for this new one i want to give a better UI.
Also due the sprites/9patch are in layout, they will still appears above all ?. Maybe if they can be done via CSS maybe there is some trick to make them invisible but functional and set my GFX there. But well, still looking for that.
Or maybe a slideBar plugin but based on actions like the events but already done with steps, minimun and all with an action in events to set what objects to be used as gfx. Wonder if rexrainbow or r0j0 have some mod or their own version with that, time to search.