If the motion control wands are implemented this generation, I expect:
1. No difference in hardware sales. It's not a standard controller. It will not affect the big picture.
2. Small selection of software to utilize it. This is a peripheral. Think Balance Board, PSEye, Live Vision Camera, etc. How many games actually utilize these peripherals? Not too many. Expect similar results with any wands the two big dogs cook up. I know the Balance Board took off because of Wii Fit, but I don't think Sony or Microsoft are daring or creative enough to duplicate that kind of success with a peripheral. They just don't have the scope and vision that Nintendo does.








