Your idea is quite good and is what every bounty hunter wants. However, if it has laden the project then I think they do not have enough capital to pay the hunter enough. On the contrary, if there is a project like what you said, I am willing to participate in it.
I share your opinion. So I think that stable coins would be great for bounty hunters BUT mainly the ICO do not have the funds to pay you in stable coins, due to the simple reason that they are doing a fundraising. Maybe this would be an option for already more established projects.
but I am sure, stable coins allocated for bounty hunters will have very little value. it is not proportional to the number of participants who will join. even if they have a large allocation, maybe they will use their stable coins that are still in the plan listed on the exchange.