When you click on the Quest Master and complete a quest, it disappears. I think the quests should stay and either be faded (at the bottom of the all the completable Quests) or it should say ‘Complete’ next to it. This is useful for when you don’t know how many Quests you have completed and you want to know how many you have left until you reach the limit. Also, it would be cool because you can go back and see the quests you did earlier in that day. Maybe it could also come up with some text saying ‘You Have 2 Quests Left Before You Reach The Limit For Today.’
Sounds cool; I personally think that moving completed quests of the day below available quests and separating them with a bar “________” and a “Completed Quests” title would be best.