Don't count on unity. Too much of a resource hog. If you really want more eye candy, your best bet is E17. If you want to see what that looks like, go ahead and install the Archlinux distro from the first page. I think Juan updated the instructions there, otherwise you'll be able to find within the first 10 pages or so. The Illume theme, for instance, has a wonderful clean interface. I posted some screens in the thread before.

Right now I am working on getting Enlightenment (E17) to run on Gentoo, but don't count on anything being ready before end of next week.