I wouldn't be surprised if Microsoft combines motion controls and traditional controls in its controller next gen. Maybe they'll have a controller that breaks apart or something.
Microsoft would be stupid if they didn't focus on creating more reliable hardware next gen aswell.
I'd be excited if they went completely towards a download based model. It makes a whole lot of sense as it would remove the cost of pressing the dvd's. which would be extremely helpful considering the cost of development these days.