A few things, however, it solves a problem I have now in Amethyst, which is that many notes are only "seen" by one or two relays (and without connecting to many more relays listed via NIP-65 for contacts).

Once complete, Amethyst connects to that private relay (and a few others) and it will stream and sync from many hundreds to thousands of relays. Much more than just a few as it is currently.