Some sort of flood control needs to be implemented in the arena that allows you to only attack the same person once and hour or something. When you get to 5-6th place some big money spenders ranked 1-4th are attacking lower players 2 to 3 times a minute every hour of the day not only to steal goods, but also general harassment. I think there needs to be some sort of limit on this happening. Stealing goods, fair enough, harassing others isn't in my opinion.