Easier and better option - relays should support #Reticulum as well as HTTP(S).
Reticulum packets are always compressed at the transport layer.
It's an established standard that "just works", no need to herd cats into a completely new binary protocol.
nostr websockets are generally flate compressed by default also... for the most part this reduces the size of the hex encoded fields almost to binary, and greatly compresses long text segments and repeating fields like in req envelopes
Don't forget LXMF
https://github.com/markqvist/lxmf
#Reticulum
