What about a way to donate (held in reserve for that purpose?) money after the fact for specific commits, and then have a way to indicate which things you’d be most likely to donate to going forward if they are completed? This would mean less reliable payments since there wouldn’t be a guarantee any given contribution would result in a payout, but there wouldn’t be any disincentive to work on things and there would be a general idea of what donators want. Plus doing it that way would eliminate the need for a manual escrow process.