Would an aggregation service for reactions and reply counts, etc help? Could reduce volume anyway.

By volume, reactions are typically highest.

No relays do it yet, however it could make sense to start returning metadata like my REST endpoint.

https://api.nostrgraph.net/beta/events/note1xsttzh4y38nwjc0945qg0t0r2rdna3zakg77pann8xevcjuv306s3qnvh6.json?pretty=true