SE should integrate the 4.2 Battle content "battle Recording" into "PVP". If no one has heard of it yet, basically SE plans to implement a feature that allows you to replay a video of the battle content you just went through, if they integrated this into PVP they could easily catch cheaters with much ease since they would be able to use their own in house recording to check for cheaters.

Players Could report along with the names of the character and send the recorded video to a GM to skim through the match, even giving time stamps to help the GM find the point in time in which the cheating occurred.