Two ways I think you should consider this:
  1. How can SN improve the Nostr experience?
  2. How could Nostr help grow SN?
Displaying public keys and embedding the last 5/10 nostr posts to SN profiles would be valuable to SN users.
A Nostr bot which cross posts headlines from SN to Nostr would be good for driving traffic.
A directory of SN profiles + public keys would be the logical and valuable next step. Currently Nostr relies too much on Twitter for this. This feature would potentially benefit both SN traffic AND Nostr users.