I personally think the installing of the WCO wasn't necessary in the least. If anything it's to stoke his own ego. It's like he's doing this to prove something. He's going to shoot this program in the ass, to inflate his own ego.
I think he's a selfish bastard, but that's just me.
Another thing, when we were running the option, we didn't have to worry about recruiting recievers. All we were worried about were running backs, quarter backs, offensive linemen, and tight ends. Our recievers didn't have to be blue chip prospects.
See, why are you going to make things harder than they already need to be. Callahan's an ego maniac...