I'm interested to see what further filter options can be put in the hands of users.

Ideas:
- DVM filters
- filter on profile meta data
- regex for filtering criteria not just words/phrases
- WoT filters
- combination of the above
- include and exclude filter criteria

How much goes in the clients and how much in the relays.  The best versatility is to have capabilities in both.  The relay helps prevent the client from having to download so much.   Maybe the client can submit a filter for the relay to apply... is there a NIP for that?  If clients submitted filters relays may be able to use that to inform what it filters to storage.

What's new with these current ones is that they keep generating new keys so a simple npub block is insufficient.  I have been unable to identify a good criteria that help block future events.

I'm excited to see how this is tackled in the community.  It will make Nostr more robust.