Miscellaneous quests, these were awesome in Skyrim as while they didn't give any rewards themselves they gave you something to focus on especially when you've done all the quests in a particular area.
I feel this game lacks that re-playability especially in vet zones where you still get loot/VP for doing stuff.
It could also make places like the fighters/mages guild halls useful beyond the quest line if they were places to pick up these repeatable mini quests, I understand the fighters guild already has something like this but that's only in Cyrodiil.