A couple of things that may be cool
1) With the active quests enabled lets say, you can expand a quest to show detail of what would be needed or minimize the quest using + or - nodes.
2) When an active quest is completed it still shows up, but automatically minimized, and then greyed out (or not highlighted, if that makes sense).
3) Of course, you would like to be able to click on a link in the active quest window to either go to your Journal or to a browser via eq2i to see a walkthrough...
Glad you are working on this Rothgar - glad to see all the cool updates in the game and with the UI.