Allow refunds for DLC
For a lot of DLC, like Beat Saber song packs, there's no way to know if it's good for you or not until you try it. So you might spend $10 for the DLC, but then you can't get a refund. I think it would make people more likely to take a chance on DLC if they're able to get a refund if they don't like it. Even giving the refund as store credit would be okay.