Warhammer has public quests, and open groups!!!!
Pfft, big deal. So does Wizard 101. (Joining a friend in an instanced dungeon automatically gives you the quest for that dungeon – et voila, public quests :)
/me calls up ISP to have them brace for a flood of traffic because I have mentioned Warhammer!
Warhammer!
Order or Destruction! CHOOSE YOUR SIDE AND PREPARE FOR BATTLE!
Woot! Woot! DEATH TO ALL THE VILE PEOPLE OF THE OTHER FACTION!