Well we won’t force anyone to migrate, but it won’t be useful anymore for anyone and we’ll encourage them to migrate. 

We’ve supported connecting at root for a while but it of course requires AUTH. 

Do you know if any NIPs exist for making a REQ for events of a specific topic or other classification?

I just rolled out initial (undocumented) support for a “topic”, “sentiment”, “language” and “nsfw” REQ filters on filter.nostr.wine using our new classifier.