If I was AD, I’d have already fired Spav, so that’s not a particularly realistic way to approach this topic.
You’ve got multiple hypotheticals going on, but your overriding theme is you want the AD to dictate who the HC hires, to keep the HC from further fucking up. While I don’t disagree whatsoever with your why, an AD deciding how a HC’s staff gets filled out isn’t exactly a recipe for success either. That causes problems in the staff, between the HC & AD, and messes w/ the chain of command.
That said, why does it matter who is named OC or where they come from? Spav is the OC, and we know that doesn’t change because someone else has the title.