It would be nice to offer a "backed-in" model for relay operators. Right now, they rely on DMs to notify when payment is needed or the draft of the notify spec.

GitHub

NIP-87: Notify request spec for relays by vitorpamplona · Pull Request #901 · nostr-protocol/nips

Paid relays often run into friction when renewing subscriptions or when upselling users to the next plan they have available. This PR allows relays...