Remeber that modifications to Blizzard's UI are still in the early stages. It took quite some time after SOE made their UI customizable before you started seeing a lot of graphical changes. The early stages there, too, were placement and what not. Give it time. And hey, why not try your hand at making one, too?
(Oh, btw, the player and target window in Nurfed are actually from Katalin's MiniGroup)