We should also be able to pick a client so they get a link that prompts them to install a client as well as the rest above. If I could send an invite link by message that would get many invites out there.

Perhaps they don't want to be doxxed from the get go. We all know there's a good chance that what's in the nostr might never be erased. But Iris.to has a good solution. It assigns a random name (adjective+noun) to each nsec when they onboard. You can change the display name but the funny one remains.