Currently playing around with a Guild Wars 2 look alike UI. It's very early in development, though. Missing all the grunge, some functionality (like castbars, target/focus auras), group frames etc. Will add this once the basics are in place.
I'm trying to stay as close to the original Guild Wars interface as possible, even though this is tricky with some UI elements that WoW needs and GW doesn't even have.
I'm implementing unitframes through oUF and everything else through small modules for chat, minimap, player auras, nameplates, tooltip and probably some more when I need them. Meh, this will take some time.
Anyway, here you go.