Well, if the Wii U's shop interface does turn out to be something like that, Nintendo's certainly taking another page from Microsoft's playbook with the Wii U. That Xbox LIVE Marketplace uses a similar interface, and while I'm not fond of it due to how slowly it takes to move between selections, it's certainly functional. I would hope, though, that you would be able to use the sticks and buttons to navigate the UI instead of the touch screen, as you can on the 3DS and now the Vita as well due to a recent firmware update.