Features I can think of:
- a system for stricter content moderation, especially something that would automatically delete NSFW/NSFL posts,
- no direct messaging,
- some kind of tool for moderators to efficiently review content,
- multi-layered access to an account to allow for parental control,
- time management tool that would not be based on the client, but with the session duration calculated through interactions.
The only reason the human species evolved language is for political organisation. Kids need politics to thrive. We have examples of kids who were raised without politics like Genie and they were severely intellectually stunted. Politics is as fundamental to the human condition as breathing.