I have been using a personalized copy of this ui for ages now... so I don't really remember ALL of the changes that I have made. However... I will try to list what I can =)
UI Modifications by me:
* Item inspect window. (Never liked the icon on the right side)
* Short Duration Buff and Buff windows. (Idea taken from Delta 3.0 Spaghetti Remix which is another really great interface.)
* Invintory window. Modified graphic and XML to provide DoN shard slots.
* Window Selector. Changed to be the 'default' window selector... which means it works for DoN.
I plan on changing the combat ability window to better 'fit' the style I have going on. But have not gotten around to doing it yet.