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Perhaps the true purpose of noble should come out, starting with a trusted payment processor.
In purely technical & financial terms, the problem with charity in NOBL is that it boils down to selling NOBL in the exchanges, because charities need fiat for the foreseeable future, and without market depth (enough orders on the buy sides), there is noone to sell to.
The payment processor faces a similar issue: payment processors are essentially a way to sell NOBL, so they require more market depth.
So there has to be some value/purpose to NOBL besides those, or some form of "money sink" to create a deflationary pressure.
Maybe some form of "charity certificate" could be imagined? broad outlines would be that donation in NOBL that go to proven charities could count as a form of "colored coins" (at that point NOBL would be used as a ledger for recording the donation), and when you have enough of those you can exchange those (through a special form of burning) for blockchain-based nobless titles (at that point NOBL would be used as a ledger for recording titles).
Personally, I wouldn't play the charity card too much at this point. It has hurt Nobl in the past as well, with the credit card scams.
We cannot keep nobl running by donations from a few people here, it has to go naturally somehow as well.