I'd love to be able to use my roll20 credit toward Marketplace purchases as well as my subscription. Basically, every time I buy something from the Marketplace, I'd like roll20 to ask me if I want to use my Credit or pay normally. This way donating is easy for my players - they have one page where they can donate $ to me and I can use the donations in any way I need to make our game better. No need to pool funds via Paypal / gift single Marketplace assets / all that hassle.