Paymentwall for donors?

[Yomega]

One feature of donating to Optifine that allowed me to donate was Paymentwall. This system is basically a way to pay except it is wider, as it allows things like Visa Gift Cards like below:

This is what I use to pay for things, but MCSG doesn't let you use these. I think this should be an option because it would widen the amount of people that can buy donor, increasing income for MCSG.