Accommodate both. Zaps included. Right now my understanding is that nft collectors use other apps to browse things but talk outsider those apps. Nostr is great as it can bridge both functions and introduce payments like zaps.
Discussion
I dont think going after any audience is a bad idea... And building it from the inside secures zaps and better interoperability. I'm just not sure if the scuttlebutt guys (or just anyone with just a slightly diverse coinbase account) wants to join nft centric relays for the same reason