Only one of those guys I'd look at is Wisenhunt honestly. And even then that's a hard sell. Sure, he's made a super bowl but he had some great talent there. That said, he did help revive Kurt Warner's career, and played a part in helping Rivers again, so maybe he could help out Joe. But McCoy has proven to be mediocre and make worse in game decisions than Harbaugh(which is saying something), McDaniels was an utter failure his first time, and Patricia isn't what I'd be looking for: we need an offensive minded dude, not a defensive one.
As much as I'm skeptical of it. I doubt anyone is going to get fired tomorrow.