oh yes! you're just way ahead of time :)  you should update the issue now a year later .
 

 What would be an aggregator? Just checking various pieces of implementation, services, etc. and don't see anything described as a Nostr aggregator. 
https://github.com/aljazceru/awesome-nostr 

 We dont have aggregators, but it stands to reason that you could have delivery networks like CDNs on the web, as things scale to more users