NickerBocker
Smash Lord
You can get a GC controller adapter for the wii u, also 3rd party controllers have the buttons and right stick switched, at least the one I have, more like the layout of the 360 controller.The only problem I see with the Pro Controller is that I think the "c-stick" and the buttons should have switched places. But I'm sure it won't be hard to get used to, and I'm intending on still playing with the Classic Controller anyways.