I'd love to see if some the following issues have been thought through:

- This sounds like spec work, where someone writes up a PR and submits hoping that they will be picked and/or paid the amount they request

- What happens if there is a disagreement about the payment amount? If the submitter withdraws their PR, are the maintainers then limited in their ability to code up their own fix since they've already seen the PR?

- If someone submits a PR and gets paid, then a bug is found in their code, do they have to pay from their share to fix the bug? What if the payment amount requested for the fix is higher than their share?

- It sounds like payment amount is determined through negotiation between the maintainer and submitter, or through discretion of the maintainer. Any clear metric on amount is likely to be gamed.