I like the way this other system in that one other MMO worked. You guys may not know what MMO this is from, but it dealt with fortifications being assaulted by enemy mobs and beast like humans. These would happen every so often and you would teleport to an area that was under attack, sign up for the fight with the npc, and then gain exp upon defeating enemies and defending the strongholds. This was a very fun and is much more exciting than these leve quests we have currently. I'm sure the devs could make a more interesting version with much more events taking place, making it unique and such.