What avatar would you pick? They‘ve left out what each avatar would do in such world

You can "play" an NPC? Sounds interesting, but would probably mean to create and maintain an agent …

Philosophically there is anyways the question how NPC is less agentic as eg being a Player. Eg it used to be that Thrall, the chief of the orgs in WoW was actually a really cool and looked-up to guy. And that Players would often pose with him. Players wanted to become warriors like him and he had a long history of fought battles. In that view the NPC is even more achieved than Players. No Player in WoW could even become chief of the orcs from what I know.