The thing people mess up with lists, is that they don't force-fetch the req. So, if I am looking at theforest feed and select the nostrdevs feed, it should * figure out which npubs aren't included in TheForest feed (most/some of the list is probably included, as people tend to share relays with their frens), * use outboxes, relay hints from their cached notes, NIP-05 relays, and/or aggregators to go out and hunt down _everything_ from those npubs, and update the map. Then the map is theforest-events + list-events, and the list events req is quite small.