Good game so far, i hope you will continue to improve this!
Until you got the auto-quests done could you maybe color-code the quest giver. So you could at least see who has a quest left and don't have to click through all of them. Another idea would be a counter below the name (like 4/10).
 "Idle Quest"){kind=icon}
 "It's Just TIC TAC TOE"){kind=icon}