Great idea, just few days ago, I was just musing within hat am not very informed about what happens when users deny payout rewards. Chanelling such rewards to worker proposals would be great.

Although STeemit.com does not have this feature, but I know other dapps have provision for setting benefactor rewards for a particular account. This is a decentralized system, as such, [people should have their liberty as to what they should do.

On your suggestion for badges, there could be some advanced future usage for such badges to encourage users to donate more. Such usage may be post exposure or points convert-able to STEEM.

In all, your idea is amazing @theycallmedan