I'm guessing it's something like 80% of the tasks only take 20% of the time. I'm sure AI generated textures could speed some of the development work up but I'm sure the majority of the work would still involve the small adjustments and tuning of the models. AI gets the gist right but the devil is in the details so designers may end up spending more time fixing what's wrong versus just doing it the traditional way.
Maybe it would be more useful in adding a different kind variation to proceduraly generated content, but on the other hand, when you don't precisely know what you're going to get, it's hard to reason about how it will be used.
i could kind of see some potential in something like based on the different kinds of choices a player makes in the game, it could generate different portraits or character designs, but you can also do that with a large library of human art or with art with modular pieces.
the thing AI can do is create something custom and individualized for a player, but on the other hand, by being too personalized, you destroy commonalities in the game that people can appreciate together.
