This discussion/vote seems to show a support for rank badges... and given that it's not a policy modification, this goes to the admins.

What do you think, should we reintroduce badges linked to ranks? Like, when you edit users with the Minotaur rank, you get Minotaur badges, for example.

We used to have them, back in the old days, but we removed them soon after the 2012 update considering the sheer amount of ranks and concerns about spam editing.