The possibilities are endless. I was thinking the same over the weekend. Nostr eliminates all other social platforms and messengers through posting or DMs. Just need an easy way for non tech people to keep their keys segregated so that the dont dox the relay by using the keys in a public instance. You can whitelist writing at the moment by the looks of it but not reading.
Discussion
Seems like a client could be made with this kind of user friendliness. Perhaps say i could be a guardian to my noob family or friends...setting the relays for them. Now i can even control the relays my kids are on, say just the Sesame Street and Bill Nye relays + the family relay. Now i have admin control to turn the relays off for sleep automatically at 9 😮
All the existing models are dead.