Since the official website said to post here... I propose a second tab within the Quests menu for Completed Quests.
Active Quests/Completed Quests
Very straight forward. I suggest this because I like to keep track of what I've done and sometimes it's hard to tell what triggers will activate what quests; keeping track of what I've completed saves me a lot of running around and checking the fansites to see if the quest is glitchy, etc. Anyhow, hopefully this is such a small and easy request to implement that the devs will actually do it.
simple quest suggestion
Oronar
Eldrig
yeah, if you've played the game (or parts of the game) several times, it can be hard to remember if you completed a quest or never got it. this would be nice.
DeanBB
Agreed, should be an easy addition and very valuable, especially when running more than one character through at the same time. Also for old guys like me who can't remember what they did yesterday!