It would perhaps make repeatable daily quests (should ever such a thing be inflicted on this poor game) not viable. Which is a good thing.

And yes, I agree strongly with your idea Denmo. It's not irregular that you end up at a quest hub, do a ton of quests, return and hand them in, only for one of the follow-on quests to send you back out to where you had just been to kill some things that you had just killed for someone else. I'm looking at you Alpha, but this happens in most questy MMOs.