I think this should be possible automatically. It wouldn't be easy and you're not going to make everyone happy. 90%. When posting party photos, only show them

I think this should be possible automatically. It wouldn't be easy and you're not going to make everyone happy. 90%. When posting party photos, only show them to people that either - also attended the party - attended previous parties with me - interacts/chats with me often and is not in my professional (or family) network ... It would need to be a lot more subtle than that, but it should be possible with all the data they're collecting.