I'll reserve any judgement until I see it (if it exists). I think it could be good, and Microsoft is known for taking good ideas, embracing them, enhancing them, and extending them. So, we just have to wait and see. It can be great, but it may also can be a huge flop.
I am actually excited about its possibilities with Halo Wars (as some rumours suggest) then anything else though seeing that RTS are usually best on PCs with keyboard and mouse. Seems like a perfect motion controller game to short cut the limitations of current controllers.







