Don't know if its possible but probably a lot of work to give us players the option to move stuff around and resize stuff.
In mmo's a big aspect of a good mmo would be the diversity in UI design, I think gunz is no other (except for the fact that theres overall less things going on in your screen), i think giving us the ability to resize like, game lobbies and chat is a step in the right direction.
And while youre at it, give an option to choose an RGB/select a color from the list for different areas of the UI (maybe like generic areas - chat background color, the rim around the room lists, ingame hp/ap/level bar background..)
