You can't have ranks as such with a bounty hunters guild. But there would be a kind of "Elite Hunter", "Veteren Hunter", "Regular Hunter", "Novice Hunter" and "Complete Newbie" kind of scenario. The lower orders would not go after high prices due to their difficulty and those wishing to place a bounty could say open to only certain levels of experience and above, or the higher your experience level, the more you get paid. You're experience level would depend on your chars history and the opinions of the top Bounty Hunters (and, once they're actually posted, the amount of bounties you;ve collected).
I'll PM this to Niner too.
I'll PM this to Niner too.