Can we have a text-only, or small icons version of the VM list, mine is already scrolling well off the screen with 17 guests.
Or how about an expan/collapse system (Qt4 Tree widget?) so you could have a folder for Windows, a folder for Linux, a folder for Solaris etc.
Also how about a way to change the sort order - at the moment its alphabetical, how about being able to sort by OS or last access date?
I think a good idea would be to make the guest list more like Nautilus or Windows Explorer, treating the guests as files/folders.