Are you serious? The default U.I. in SWTOR looks absolutely atrocious. The worst I've seen in any game, ever.
I disagree. It's very well-made, in my opinion, conveying most of the information you need with surprising clarity. Especially compared to eg, WoW's UI which seems basically designed to make new players fail without extensive modification.
I think it's a "curse" of MMO UIs that the default will always feel a little clunky or extraneous, but I'm honestly very happy with SWTOR's approach. It just needs some tweaking here and there. WoW's default, on the other hand, needs to be shelled down to the bedrock and rebuilt as something remotely comprehensible.