as an addition to the basic starter quests, people could make their own, share them publicly or privately (perhaps something similar to hearth secrets, or tabs for world, village, kin and personal quests). these could range from simple fun, to bounty hunts, story quests, personal or village to-do lists, ...
they could also serve as more in depth tutorials about certain aspects of the game, that jorb & loftar don't have the time/energy to devise, by some guide creators from the forum for example. these could receive a mod-approved tag, or gain +1's so players know they are "safe".
i feel this would be much more in line with our player-driven world than hard-coded quests.