Barbe's biggest adversary has always been WM. Every time they've had a great team WM has sent them home.
Sent them home really is the nicest way it can be said. WM has demolished them on more than one occasion to end their season, unfortunately.
I posted something about this last week. My thought was essentially the same as yours. Throw the successful privates up in 5A or create some type of 6A hybrid instead of letting them beat up on 2A and 3A public schools...