At the users page, sort users by
- Gold badges
- Silver badges
- Bronze badges
- Date created - oldest first, of course :)
As a bonus, this would eliminate any sort of tie (thanks to rule 5), which would provide a stable order. The order wouldn't change when you refresh the site.
It doesn't exactly add much value to the site, I know, but I suggest it because it seems like it shouldn't be hard to do, either.