The Community Council has always paid bounties, to a fault even. Their trustworthiness is proven.
It’s pretty easy to define what an MVP includes. Doesn’t need to be a long term bounty either. Can do smaller bounties for shorter stages, which would allow more flexibility in terms of changing priorities on your roadmap of whatever you’re building.
Here is a different idea that doesn’t involve bounties (more freedom for you). Build a basic fundraising app. This could then be the vehicle that funds your own work!
Use view keys to allow contributors to see how much has been contributed.
Use payment proofs as a way for contributors to prove how much they’ve contributed, so optional rewards could be given like on Patreon, etc.