That would be awesome.  What would also be awesome is if all nostr apps didn't get confused by a completely virgin npub.  You ought to be able to generate an nsec offline, stick it in signer extension, then nostr apps be able to take it frictionlessly from there.  Too many clients can't even seem to handle adding follows, for example, unless there's an already established follow list to add to.

Once handling virgin npubs is standardized, I look forward to the inclusion of a fully functional wallet as well.