Overall the UI is very hard to work with, it is barely customizable and overly crowded. Some parts are too big and others are too small. After researching how to customize this UI, I have come to the conclusion that DDO needs to covert the UI to client side and make it fully XML. I understand there is a lot of action bar usage and this is a major area that needs changing to something more useful and workable.
Currently the majority of UI control is serverside and the user only has a INI to store settings. Does this make for a smaller data packet when playing? Would it make a difference?