Hunting quests
Description
I was playing on one server with nice feature (hunting quests), which was offering players way to spend time hunting monsters for small rewards and points. This feature was really popular and offered players another way of spending time in RO.
Hunting quests would be feature, which will offer players to do some quests of hunting various type of monsters in trade for small reward (not exp reward, just motivational item reward). Hunt quests could have number of repetitions, with bigger reward for completing whole quest. Each quest can have different properties, like (obviously) type (id) of hunted monsters, count of monsters to complete quest, count of quest repetitions, repetition reward, final reward, lvl restriction for Q, unlock restriction for Q (another Q needed for unlock this Q).
There can be larger rewards (maybe some unique headgear) for reaching some milestones in hunting quests (i.e. 100/500/1000/1500/... hunting points acquired - hunts completed).
Rationale
It would give players another option how to spend time (even in endgame) and can create opportunity to compete with other players through some kind of hunt quest points charts.
Additional Information
For inspiration (or to see how hunting quests could look) you can use this Example of hunts. It's in czech language, but you can use google chrome feature to translate whole site. It's just of list of hunts with monsters and properties of that hunt (lvl restriction, class restriction, number of kills needed, repetition count, rewards, unlock requirement,...).