My Vote - Maps.
As to Quests....I am not sure what the issues people keep talking about. I have no issues with the quest in Carbonite. I am able to find what I need. If a quest comes up (been a few) with Not in Database, then I flash back to my early years of playing WOW (ya I am one of the few here that has played Beta till now) and just figure it out. Read the quests, they tell you what to do. Come on, use that thing above your shoulders you cover with a hat.
Rythal, this can not be said more, thanks for all the help you have put into this.