And, if you feel like donating some disk space to the cause, also set ARCHIVE_ENABLED=true to turn your gossip-listener into an archive node to serve catchup requests to other nodes.
Archiving is a thing we can do a lot with, including
@68a77ba3…4f0a8341 's work on podping over AT protocol. But, this gets a rudimentary mechanism in place for the mechanics of 'catch up' to be fleshed out.