One huge issue is that many people get confused when they join NOSTR and then they leave. Karnage has suggested Google Login which would greatly minimize the "learning curve" for the average user. Clients need to have "clean" relays for the new user so that users have a non-spam ,bot, trash filled experience. I see many complaints from new users which are dismissed by many. It must be easy, fun and engaging for people to stick around. After they are comfortable, then they can learn about the intricacies of relays and all the other interesting things.