I still see a lot to be done with motion controls. The problem is the game making community, maybe the publishers but likely some developers, are attached to the former methods of control and creative ideas aren't really the prerogative of big publishers. You need indie daring merged with the extra space of motion controls. I thought the next Wii would have advanced motion controls and would reveal a truly bridging game between mini-game collections and a fuller, more cohesive game. Nintendo also needed to push digital download and approach the indie community.
Instead, they let the big publishers copy Nintendo's Wii launch concepts and run them into the ground. This created a product image for Wii that didn't necessarily need to be so. The Wii U still looks like a compromise for dudebro gaming, some sort of reactionary response.