Let’s face it. When Museum was released, the developers said that the score where you accumulate your points by completing Collections, would be, as they said, “Just for dick-waving”. However, it doesn’t sound like the best option to be permanent when it comes to be usefulness.
There’s enough space for another Shop. As some people already have suggested, I recommend you fellas to create a “Museum Depot”, or also invent a system that exchanges the score with unique currency, such as “Museum Tokens” to spend on such Shop.
You can sell ascendable/unique characters, special weapons, weapon upgrade parts such as Spray paint cans, Polishing Kit and Duct Tape, and even a fixed amount of tokens for Epics, Ultra Rares, Weapons and Prestige tokens, as well as Ascending Tokens (Both Golden and Silver).