It looks, of course, it's a little fantastic, but why not. Imagine for a second that let's say, purely hypothetically, Lloyd Corporation, which has vast experience in insuring unusual and unique risks, offers bounty hunters to ensure their participation in a bounty company, for example, such a project as Cartesi. You pay a fee, depending on the risk, and in return, you receive guarantees of payment of remuneration for the work done, even in the event of a bounty failure. It is interesting to hear your opinion, do you agree to such conditions? Something similar would apply to investors.
Lol, bounty hunters shouldn't pay a fee for a guarantee payment. The project itself should be the one who need to take care of it, that is if they are not scammers. However, for the legit ones, I don't think we need such kind of setup though.
And I would agree as what @Baofeng said, bounty managers should ask the project to escrow in advance the tokens or at least the payment scheme before accepting the job to ensure that we (managers and participants), are not going to waste time handling and promoting that project.