After reading this I just customized the top toolbar and put a bunch of stuff in it. It looks horrible. Really cluttered. I guess this has been discussed to death but it would really be better if it were under the display and above the panes.
Also I'd like to see the Categories put on the left, perhaps inside the "display" area. There would be plenty of space for them in there and would make efficient use of space.
The DSP, equaliser etc could be made into big icons again to balance the design (something in both the left and right) and bring focus back to them.
I saw that the question of the search bar has prompted lots of discussion too. I think its size if fine, but it's trying to do too much. Let him stay as a simple search bar and put smartlist and playlist rules somewhere else. The action window is taking shape and seems like it could be the answer.
Sorry, for leaving the topic of this thread a bit. I seem to apologising for that a lot recently. Oops.