I'm a fan of the fresh look. I think at first glance this theme makes Ubercart.org look like a Drupal site, where the old theme was a little less obvious...but I don't consider that a bad thing. The homepage is going to be key, so I guess that will end up getting the majority of the tinkering. One idea I had that I'd find useful there is to see a logged in User's recent activity based on their Track page.

A lil' bug I noticed was at the top of the 'Installing Ubercart' pages. The top line of (for Ubercart beta & Drupal 5.x) is getting cut off for me in Firefox.