Haha, had the same thoughts and was writing it all up @ Bot war: Failing txs while you posted this topic.
I see they also came up with the throttle/timeout idea at the OpenZeppelin forums, I’m running behind the facts with my ideas and topics, haha!
Just consider this as a +1, I also think community-wise this isn’t feasible because after a few failed tx’s people won’t bother competing with the bots anymore, leaving the same bots winning every job.