It's great to see this UI being updated, I've been using it since it came out. I play a melee character, so I've always used the GroupWindow-NonCaster mod. However it's still giving the XML warnings in 1.7.1, so I updated it based on a diff from the caster version.
My version is attached if you want to just grab it!
For combat abilities, I replaced my pet window with Tevin's warrior minimalist combat ability window (
http://www.eqinterface.com/download...nfo.php?id=3114). Something along those lines but that "fit" better in Quartz would be awesome.
Keep up the good work.