One of the most interesting things of this refactoring to get Amethyst into the outbox model is the realization that many parts of nostr don't provide guidance for relay hints.

For instance, when you follow a hashtag. Which relays are you following the hashtag on? Is it one relay for all hashtags or each hashtag you follow needs to have a relay list for itself?

Same for locations, labels, reports, products, DVMs, blogs, etc, etc, etc.

Following keys is the easy part.