Very impressive so far, perhaps some theme/background setup could be useful for personalization

I'm very impressed with the general display and functionality so far of the BETA.

The one thing I think would be cool but not necessarily needed would be some personalization e.g. theming, backdrop, menus, widgets etc.

This could play well dependent on your product area especially if you deliver updated content on a consistent basis.

Overall I'm quite fond of the new layout and functionality :)