They seem too clan-like. And War game-ish with the arrows. There is really no need to show symbols of power. Mostly everyone knows it goes Admins>Moderators>Members. I have no need for Jr. and Sr. Members Right now. but soon I want to start a schooling type thing which will involve needing an Intern or Trainee button.
I hate to be mean, but obviously you don't, so I just don't really see the point in this.