optout on Nostr: My wishlist for a personal Nostr relay: - a relay (obviously) - caching (from other ...

My wishlist for a personal Nostr relay:
- a relay (obviously)
- caching (from other relays)
- access control on different levels (IP, pubkey, ...)
- space usage control
- built-in attachment/file hosting solution or integration with such a service
- import and export support