The furor over at the General forum has made me think that it's time to revisit this particular topic; we need more Ur-related quests like the Jethimadh Tower quests and the DNAja vu quest.
In short, quests that will take us all over Ur or give us more background about Ur, the Giants, or the Rook. That way people will be enticed to immerse themselves into the world of Glitch again.
EDIT: Found an old thread by Aviatrix that mirrors my thoughts.