Since VRChat already holds a record of users' age - I believe It would be nice to add a feature to the game where when creating a world instance you could set a minimum age requirement to it (or possibly even a specific age range) - any users outside that age rating would not be able to join an instance.
This wouldn't be the same as NSFW content gating as it applies specifically to instances, and would allow people to filter younger audience of VRChat from an older one (and vice versa) in every world currently in the game. At this time the way VRChat community has implemented something similar is when joining certain world instances - especially certain group ones - somebody unknown to you asks your age for verification, which is not something me nor anyone else wishes to share with people they don't know, so being able to do it anonymously and automatically would at the very least fix these kinds of privacy related issues.
And of course another quite obvious benefit to having this feature is having specific instances with people of similar age makes it, in my oppinion, much easier to relate to others - to be able more easily find a group of people with different experiences, cultures, to have a meaningful conversation with and share each others experiences, while maintaining an instance mood where most people would find it mostly pleasant without having it somewhat ruined by anybody else.
Hoping that this feature will at the very least interest people.
Have a great day to anyone on VRChat team reading this :)