I presume you mean a NIP that extends the REQ. I'm not sure what pulling this out of NIP-01 accomplishes. In any case, #p queries are pretty useful (if you ask me).
>From: jb55 at 03/05/23 07:56:46 on wss://puravida.nostr.land
>---------------
>I think we talked about removing that anyway and splitting it into its own optional nip.