I'd like to see it working well outside of US, including "Zune Experience" and games.
Just now my country is not listed when creating Zune profile, and it's unavailable for XBox Live. Bing might work a little better too.
You've shown a great device in both terms of software and hardware, but I wouldn't want to buy something limited. If you want to sell it ourside of US, make it work in these locations. If MS don't do that, people will buy products from the competition. There are really more countries out there.