I got banned 10/11 recently including hardcore character 4/4. I noticed the bot have been attacking invisible object before it was banned. Blizzard is probably tracking all the character that has a high count on the invisible object. They definitely cannot detect DB if so we'd all have been...
First of all, this is am amazing plugging.
Is it possible to identify the leader's target? If all the follower target the leader's target, it remove the problem of echoing fury(FEAR) and would definitely speed up the run and death rate. Especially when running MP10.