1. COD - this is obvious, a next gen cod will do insane numbers.
2. Kinect 2.0 flagship game - the game that shows off the kinect 2.0 and makes the casuals go WOW!
3. A "hardcore" 360 exclusive...can be gears, halo etc. But i think MS will develop a new IP to show if its new hardware. I believe its easier to show off the capabilities of your next gen console by using a new never before seen IP than say using gears or halo which are synonymous with the current gen and has a familiar look and feel. It also gives MS a good chance to create another blockbuster IP.







