mine would be:
a raven custom painted with poker designs
3.5mm jack
light up buttons
black glow light(possible lol?)/white LED's chriscrossing and the x in the middle lit up as red
an added tacticle switch on the front of of the controller, a little lower than the d pad and the right thumbstick, but centered which would be used INSTEAD of the sync button to program the controller
and lastly, two small rotating wheels positioned above the mic port on the botton, which would each have a small digital screen above then, which would say a number. the number would be the mode that you are on, and it would be quickly chosin by rotating the wheel. This would make switching between modes extremely easy and quick.
ONLY GOD KNOWS IF THIS IS POSSIBLE
i mean it probobly is, and if anybody were to accomplish it, i would bet on it being fredrow/odin
by the way, theres some ideas for your next generation of controllers odin