WoW's UI mods make me vomit as a designer.
Truly? From a game design perspective I see WoW's UI as basically the peak of MMORPG interfaces. This opinion is also strongly backed by the fact that practically every MMORPG since WoW has copied the basic premise of WoW's UI. I don't consider FFXI's default UI minimalist so much as lacking functionality.
I was talking about the multitude of wretched user-created mods, although I find the default UI a bit bloated and cluttered in itself, compositionally. Less is more, in my opinion.
I don't think XI's UI really lacked functionality, considering I could do pretty much everything in a heartbeat without touching the mouse. There were certainly things that could be improved for the sake of efficiency, but I loved it.
Edited, Aug 19th 2009 7:47pm by Kirbster