1) Can you be more specific? You mean move in a 3D world like an FPS? Because most of the games are allowing you to move your entire body in a 3D world. For example in Kinect Sports you are running your 3D character using your entire body and in volleyball you can move and you can hit in 3D. So you will need to be a little more detailed here.
2) The move wouldn't work right if the ball could not be seen. I am talking about head tracking with PSeye wouldn't work without light. The move on it's own cannot do serious head tracking, but the PSeye can do the traditional fake 2D head tracking and it's not as good, you need to be closer to the camera and it needs proper lighting to make it work.
3) Kinect has only just launched this month. You have to give it time. Milo and Kate will probably be out by next Christmas and that is only going to be the first title of that technology being used.
December 4th, Kinect will have been out in 30 days in America and that is not a very long time. More things are due to be anounced on December 12th, and E3 next year. For goodness sake give it a little time. You are judging an entire platform based on less than 30 days on release as far as software goes and that isn't very fair at all.
Dance Central is a launch title that a lot of people love and so is Kinect Sports and then for the kids you have Kinectimals which will probably have a sequal next year. A lot of people love these titles. Then you have some of the kinect fitness games which can measure body parts and give you real stats in realtime and that also is impressive as you can't cheat.








