Are you taking into account this ranking: Troy Hunt: I've Just Launched "Pwned Passwords" V2 With Half a Billion Passwords for Download ?
Maybe the [number of hits] counter could be a changeable setting with a tooltip taking the admin who’s editing it to above mentioned link?
I think this could be more useful than disallowing the use of passwords which were only counted 10 times for example (10 times out of 5kkk).