put 2 GM's on every server one in the open world and one in the arena, they can ban any bots they see or come in contact with. its not hard. WoW used to have GM's running around in the open world why cant you? I dont see any Issue with this to atleast try and combat the bots.
NCsoft is driving away their player base with bad management of bots and hackers, I wanted more from this game. Guess I'll just have to live with the hack that they could have done a better job and choose not to.