This is a really neat tool. However, starting someone with the same relays as another nostrich could be counter-productive. For instance, I am currently using a paid relay that a new user would not have access to without paying, which they may not want to do if they aren't yet sure if they want to stick around. I am also using a WoT relay that they MAY have access to, if the WoT goes that many levels deep, but only after I follow their new npub. And I am using a couple private relays that only I or those I have whitelisted can post to, so I would need to whitelist their new npub before they could access it.

Back when everyone was just using public relays it was probably a great idea to make sure they had the same relay setup, but those days are coming to a close, and it's not as necessary, now that more clients are adopting the outbox model.