Might there be an option of 'put money down, demand a review before arbitrage, get your money back if you win' solution? The money should filter out spammers.

Might there be an option of 'put money down, demand a review before arbitrage, get your money back if you win' solution? The money should filter out spammers. The price should cover the actual costs to defend against DOS. The biggest issue would be that bad actors could get insight into how Facebook detects. But maybe more openness here would be good!