Dan, you're getting ahead of yourself. You say a mildly adequate QB would get us 1-2 more wins. That year, we lost games 13-10, 13-10, and 16-14. I don't think that's a stretch. All we wanted was for JP to be mildly adequate. He wasn't.
That doesn't mean everything was his fault, but we changed a lot of the rest of it. We have a new coaching staff and GM, with a new philosophy on defense. If Mularkey was still around, we'd be bitching and moaning about him. Instead, there's JP.