Suggestion: being able to indicate intent of donating

[WhyNotHugo]

Sometimes I want to donate to someone who hasn't set any payment method I can use.

I would like to anyhow indicate that I'd like to sponsor them and an amount, so they can have visibility into potential donations they'd get via a given payment method. I'd also expect that to go through automatically once they do set one up. Perhaps a confirmation would be safest tho, I can assume many wouldn't like the surprise charge in many months pass before the recipient adds the payment method.

Thoughts?