So in booty bay tonight, had a level 60 epic Mage stand on the ropes near the flight path of the horde, close enough to shoot arcane missiles to anyone who is going in and outside of the inn, the quest givers and flight path of the horde. He knows full well what hes doing, and is only able to access that spot if you jump over the rooftops and run up the rope, out of range. In the combat logs you can see hes damaging people, i had to sacrifice my voidwalker to survive this time.
This is against the rules, its the same BS that people do in gadgetzan sitting on the carriage by the auction house.
http://imgur.com/gFdchsT