Hypothetical situation, which will come up pretty quickly after this system is put in place (IMO):
User A has been a mod of a relatively dead issue so there has been little board activity in months/years. An "awareness campaign" (disclosed or not) rolls in and suddenly there's a flurry of new posts by quite a few people who have never been to that board.
Users B-G, the new posters, claim the old mod is not fulfilling his role so they want them removed and one or more of the new friendlies put in place as mods instead.
Will the original mod be allowed to be kept on and the new users added so that someone is there when the group moves on?
PS: This is not so hypothetical really as I and others have gone through it. I fought to get the mod position back after they all left the board with Mr. No Moderator at the helm.