@OP:
Motion control in PS4 and XB720 would simply fill a gap, making them less hopeless against Wii and Wii2, but Sony and MS should make other innovations, simply adding what they miss compared to Wii would sound "me too".
While improving motion control is simply a natural thing to do, to keep up with technical evolution and avoid the risk of falling behind (as it's now undeniable that people like motion control, so they could prefer competitors if they realize a better, more precise, more reactive, more complete, more ergonomic implementation).







