Just a forewarning, if you non-japanese xbox owners want the digital only japanese games you will need a japanese xbox.
while disks arent region locked, digital purchases are.
Huh?? No mutiple accounts from different regions like my PS3/4??
XBOX doesn't do that.
But no worries, you can enjoy needing to pay for a SECOND Kinect rather than hot swapping a single Kinect between your US and Japanese XBOX.
...Even if there is no Japanese only games that use Kinect! MS just made sure you would have the pleasure of owning a "Japanese" Kinect.
Are you sure you'll need 2 kinects for this? Sounds counter-intuitive.