Hi there - yep, this a work around for simple things, agreed, but my "problem" came about where I am looking to map a house across from me, and have a 'mask' of the windows/doors so that when i play a full screen video, it maps across the house as a whole object.
Within the same project I also need the opposite where I 'mask' the brickwork and have full screen video playing across all windows.
When I create masks, these are obviously overlaying.
A 'quickfix' solution (THIS IS FOR YOU DEVELOPERS..hint hint) would be to have MIDI or OSC control of layers in MADMAPPER and then masks could be switched on and off when needed.
This feature would be useful for many other reasons too.
Still a lovely piece of kit though, and I will keep experimenting