As others have stated, I also play at 1920x1200 and have lots of room to work with, more info showing means less digging around I have to do.
Also, I came over to EQ2 to play with my fiance from WoW. I like to have information centered around my player:
http://www.spiralguild.net/pic/ui.jpg that's my WoW UI.
I'm not sure if a HUD is possible in this game, like the one shown in the picture. But I would like it if the Self > Target - Implied windows could be like the ones at the top of the screen, showing numerical values. Would also like the numerical values be a Current/Maximum set up. I would edit my WoW UI via .lua files, but I'm a noob when it comes to xml. Mainly I prefer this way as my screen is kind of big (24" wide screen) and looking all around in the corners and stuff isn't what I'm keen on. This way I can just watch my character and be able to view any vital stats (hp/mp of myself and target, generally had my group windows right under my player too). The rest of the stuff I don't mind being away from the character.
So far your UI is the only UI I've managed to get to work at 1920x1200, and am enjoying it.