Here are my ideas for some. Local watch tells you to take out a group of bandits along X road, escort a merchant wagon or person, carry a message, fetching items for merchants, collecting dues for merchants, take somebody out (a lord's son for examp) and so him fighting and the world, Clear a dungeon and scout it for ore, Find my lost ring in the sewers, bring a more provisions to this out post, Carry a gift to this count, take these troops and burn a village, kill a dragon (or other monster) that's been hanging around recently.

if by recycled you mean, u can nvr run out of quests then yeah that would be neat. Kinda like Shivering Isles DLC, after you become prince dude u can get quests from Haskill and they nvr run out. What ould be really really cool is if they implemeted in something similiar to WoW, where u can only do certain quests every day, and the reward are token to which u can buy awesome stuff from but only with the tokens you recieve. But yes i like your idea.

mine ran out i could only do like 5