Right now when I browse wss://ppe.swarmstr.com/ (by the way, it's just one click on the relay URL to browse on Gossip now) I see a bunch of notes that are replies to other notes that are outside the relay.

But it would be cool to have something like a feed of notes that people paid to publish specifically to that relay, like a privileged billboard, I don't know. Maybe you could even reorder the feed such that highest paying notes are returned first instead of the most recent -- or ranked by a combination of newest+more expensive, I don't know.