I don't see what's wrong with the default interface, it looks fine. I don't really care for glittery effects with transparency everywhere. Functionality comes over beauty for a device like this.
The interface should be fully navigable without using the touchscreen. Something menu driven would...
I didn't preorder, so I'll probably get a second batch unit. I'm a little bit of a retro gamer, but I'm mostly interested because I could really use a powerful portable computer.