indeed it is very difficult for campaign projects to provide certainty for participant bounty payments, bounty participants only become slaves who must follow the rules given without obtaining certainty of payment, if you pay early or every week, ETH or BTC or tokens that have been listed. will make it easier for bounty participants
Agree with you, it is interesting idea. Maybe, it will be better for everyone, if projects will pay 50% in ETH or BTC and other 50% in tokens.