I will only be running MAME, Daphne, and PinMAME. I may, and I emphasize 'may', see if there is some easy way to get my old Dreamcast in there, but I would use the DC controllers, and not the arcade control panel.
Running an SNES emu or some other console emu sounds interesting, so I will have to look at that possibility, but for now, I am focusing on the 3 (Mame, Daphne, and PinMame). I will weigh the SNES, and other console emus over the next couple of days and see if I want to add them or not.