A feature where you have the option to share a home world with multiple people. It could have a special invite system where you invite your friends through email and the home world can be shared. It can also be managed by the creator of the private instance where they can add and boot people from it, and it can be managed with its own dashboard in the vrc settings menu. It would be really fun to have a home world you spawn into where your friends are and automatically just start hanging out!