Quite honestly if I had to cut my left nut out and choke my dog with it to make a decent space sim fighter game with good kinect head tracking I'd probably do it.
Head tracking remains the factor I look forward to most with all these motion-gaming camera gadgets. Hopefully the next systems will bundle their tech in, I'd really like to see it become a standard feature in FPS's and racers. heh Space and flight sims too, I guess.
I just miss my space sims. Head tracking may solve my biggest beef with games that have a cockpit/driver seat option. I always switch to third person to better see whats around me but if they can get this right and make it feel right I could stay in "seat" mode which to me is more immersive.