[jchmrt]

> That is the issue here: people want to be able to sell their cards to other players, and now you need to build a mechanism that supports that correctly without becoming riled in the customer support issues.

I mean, if you put it like that it sounds as if the main advantage of the blockchain technology here is to offload responsibility for the inevitable issues that arise when people start trading for real money, such as scams or people regretting their purchases. But you're not actually solving these problems, you just gain the ability to point to the decentralized blockchain and claim there's nothing you can do about it.