I like the domain rankings, seeing which domains get raised or lowered by people (https://kagi.com/settings?p=rule_leaderboard)

I'd love to see a upvote/downvote system per query/result, as another ranking metric. Especially if it can cluster recommendations by "users like me", similar to how Netflix recommendations used to work.

Maybe don't apply it to political searches, lol, but for everyday queries I'd find that really useful.