Felicitous greetings, everyone! I’m Dave, a London-based software developer, and the nerd-like organism behind Skiff.
Since attending the Ahoy meet-up in Hamburg at the end of April, I have thrown myself into ATProto and have been learning Rust in the process, which now means I am thoroughly bored with writing C# in my day job!
Over the past couple of weeks, I’ve been experimenting with the Bluesky app source in an attempt to launch a social network for the bear subculture within the LGBTQ+ community; therefore, I believe private content/data is vital for the future of ATProto. With that in mind, I recently wrote an RFC on the subject to get the conversation moving. Please feel free to take a look and open an issue if you think I’m spouting nonsense, or tell me directly here; no well-formed argument will be ignored! 
Apologies for the preview, I can’t seem to get it to show the link alone.
https://github.com/knasher/rfcs/blob/main/atproto/001-private-content.md