The NFT piece of this is just such a small part of what’s needed to make this work though. This sounds like it is only something that would work in a very cooperative model - where the players and the games devs have their interests aligned in getting to use these shared assets.

The most similar thing I can think of is like gravatar images - as a blog comment section it made some sense to let people bring their ‘identity’ with them in a low trust way.

Sure, that kind of interest alignment can exist in games but if everyone’s cooperating there’s no need for a system like NFT to enforce the rules about who gets to use what cosmetics.