I had some ideas in mind, some very easy to implement and some more complex:

- add a "nostr dunbar number” where if someone follows too many people its probably not well curated and could be ignored

- weighted scores based on contact list size

- complete pagerank-ish system but for pubkeys (track inbound and outbound follows)

I'll probably start with easy ones first, but so far I've put them all on low prio because the current WoT filter already seems to work pretty good.