To be fair SN already has the "private key" to my SN account and SN wallet... so it's not ~that different. But I agree that integrating with signer extensions would be cool (e.g. Alby or Flamingo). SN could then store the presigned event and only broadcast it when it reaches some level of trust - this would be great, because that would only publish higher rating/trust posts to the wider nostr network and it would act as a great "marketing" for SN. Also consider there is a difference here between content post and a link. For content posts you may consider just always broadcasting those. For link posts, only broadcast when it reaches some trust or when it gets multiple interesting comments... SN is the place where we have the best quality sorted content and conversations. That works well in tandem with the Nostr social type posting.