The Future of Persistent Worlds In MMOs
How about a game where the player that achieves the great status becomes the next target for the player behind him? Good/evil alignments would fight each other for mobs/quests and higher status players become higher level targets. Roleplaying could become a bigger deal and make more sense.
Keep track of everyone that has anything to do with _MOB_X_ and if those players associated all quit, bring _MOB_X_ back into the game, recycled like.
heck, have quests where you bring 20 healers with you and resurrect _MOB_X because you are aligned the same as that mob.
I think there are numerous ways to handle it,but I suppose it comes down to development time/cost..