The Xbox3 will not use a wiimote control, I'm fairly certain of that. You don't have to look very far to find a lot of serious gamers giving opinions on controls, the majority of whom prefer a control pad to a motion device.If they can improve on the wiimote and give something that doesn't feel like such a gimmick to the more serious gamers out there then I wouldn't mind, but I think another controller is the way to go.
A lot of gamers have hammered Sony for the Six-Axis and Nintendo for the Wiimote, Microsoft aren't truly ignorant of rival machines (just to their own reliability

).