Project natal?????????????

I only have one doubt about natal... HOW THE FREAKING CRAP WOULD YOU TURN?!!? I know you could walk by walking in place but if i turn... Now im not looking at the tv! How could they fix this? Also just imagine... in halo being able to choose if your gernade would go across the map or just a few feet ahead of you so the 'hog will drive over it just as it explodes! Or cooking the 'nade! Imagine reaching behind your head and pulling out an ult rifle! imagine throughing a gun to your teammate and they reach out and grab it! Imagine puting you hands out in front of you then jerking back to get a mobile turret! Imagine thrusting an energy sword into a helpless grunt! "Imagine!" that is waht the natal slogan should be... Imagine!