Yes, we have that in PeerTube already and it's awesome for private communities like a school, a company, a extended family, etc. where you want to be able to share some stuff mostly with this inner circle.

On my PeerTube instance 90% of the videos are only for internal use of my extended family and friends because we post videos of our Children there which we don't want to post on the open internet but still want to have the convinience of all the metadata with thumbnails, tags, search, subscribtions, etc.