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.
Parents should parent their kids. If they are harmed by taking part on a platform, that’s on the parent. Parenting tools exist on the network and device level. But you might just want to trust your kid and let them grow up.