I'm pretty sure it's Ubisoft's games, not yours. As such they can and should do whatever the hell they want with it if they think it will get them more revenue.
Maybe its just as an extra input method for certain gestures like head tracking or arm movements for troop directions ie in addition to the pad not instead of it
I remember one of the main examples when Natal was announced, was if you could wave your hand around to regroup your teammates. That sounds inline to what Ghost Recon is. If you happen to own both, then im sure it will be a pretty neat feature.
I'm pretty sure it's Ubisoft's games, not yours. As such they can and should do whatever the hell they want with it if they think it will get them more revenue.