Does a skin make a new UI?
Nice article but personally I don't see much difference from Metro and any of the myriad of UI 'enhancement' programs that have come out for Windows over the years. Anyone here remember WindowBlinds?
When you get right down to it it's a fullscreen UI replacement running on top of the traditional windows UI. Which you can see if you launch any windows program that doesn't exist in Metro, completely ruining the experience, as you have noted yourself.
Like before, the need for Windows to have backwards compatability might be what kills yet another promising idea.