Say what you will about MMOs and their often lackluster interfaces, but they tend to get this right. Many, many elements are resizable and movable. And when they aren't, a simply "Add-on" (not a mod) can make it so easily.I really want to see all ... yes ALL ... UI elements movable, resizable, and with an on/off toggle.
Let me put the UI elements I want where I want them and the size I feel is appropriate.