I love, love, love the new UI, a lot. I love the big black boxes when I do actions being gone, and they scroll on the bottom or go in the Local Chat box.
I like that instead of a bar of xp there are numbers for imagination - that way I can visually watch it change when I do things... really minor, but nice :)
I'm with you on the UI, Buttercup. The whole screen looks so much cleaner and fresher. I love the idea of a facial expression showing the state of your mood.
It was a pretty game before, but it's even prettier now.