Have you seen https://www.deel.com? Might be a solution for this problem.
(possibly I'm misreading Stripe marketplaces' offerings, please correct me if I am)
Do you make use of Payoneer API for payouts? How do you find it?
Payoneer is really cagey about how you unlock better features, our account got upgraded to VIP though because we pay a lot through it. We still use their interface, maybe I'll figure out how to get their API someday