It will make for a more seamless experience in the client. Hopefully clients will still preserve the option to link an external wallet. It makes portability easier. I have one wallet no matter which client I happen to be using. It’s efficient.

I'm waiting for the moment when existing wallets integrate with #nostr.

They could import the Contact List in order to add the social features needed to compete with services as Venmo and similar.

I think it's pretty good now how it works with external wallets. I don't think this should be mixed because it will just add an additional attack surface.