Hmm have a look at Laffs Lite .. the idea was to use as little screen space as possible but yet all the kinnda important windows still on display.... The way I use it is turn all the backgrounds off that makes it semi transparent so you can see somthing that would normaly be hiding under a UI window in game and of course lets you see more of the landscape.......
Might not be to your taste.....
But even the deafult UI now is not that bad if you turn all the frames and backgrounds off on the main windows, and you can set the icon sizes and stuff in hotbars far as it go's its much better than it was at first, now that was "clunky" one icon was the size of a small childs fist heehe
Failing that just hit f10 twice you cant get any less cluttered than that lol
