I agree with the KYC system. In my opinion, there is no perfect solution to that. On one hand, implementing KYC removes scammers completely and gives bigger rewards to honest hunters only. But on the other hand, gathering personal information is a big issue. Especially if the project is shady and could sell that info anytime on the black market (happened before). It is also not what cryptocurrency stands for, it should be anonymous, at least to some extent. Doing KYC for 100$ reward doesn't sound like a good idea for me, especially because hunters are not investors, so you don't need to check on the AML laws here. I can think about two solutions. First is to find a system, which is robust enough to remove scammers without gathering too much personal info. The second is mandatory KYC for ALL campaigns with ONE most trusted provider. You do it once and apply it to a new campaign. Much like how the system on bounty0x platform works.