Metro isn't a GUI for the desktop. It's a GUI for a tablet or a phone.
I couldn't have said it better myself. The real problem is... why does Microsoft insist on forcing it onto desktop users?
Probably true.
If the console is "digital download focused", it's likely the game on the disk will be a hard-copy of the downloadable files, with a code to unlock the game. You insert the disk, enter the code, authenticate with your account, wait for the files to install, and then promptly throw all physical media away, because it's useless to anyone else now.
For households with no internet, you'll have to do phone activation.
... I'm sad now. We live in a horrible world.
I know someone who would always shake their iPhone immediately after rotating between landscape and portrait, just so "it knows I rotated".
I never had a problem with the accelerometer recognizing I've done something. Except when I use Rotation Inhibitor.
It's a naive, domestic operating system without any breeding, but I think you'll be amused by its presumption.