About everyone who's claiming that this isn't unfair, I don't see any reason how it is.
The HA's were chosen by all of us HS, and they have been HAA recently, and I'm pretty sure you guys already knew that they will actually get promoted to HA.
About the HAA the HA chose the person himself, don't think how that's unfair, since the pick was pretty decent in my point of view tbh.