Under a single-writer ceiling how could there be any chance? This multi-relay/specialised-types would be a neat but at some point though you have to question why nostr in the first place. There's a limit to the number of nostr qualities you can sacrifice before you get to the point where you're in a worst of both worlds situation, what could have been a performant centralised architecture is held back by a bunch of nostr tech debt that isn't enabling anything nostr-like in the first place.