I actually don't think Gerrard behind Rooney would be a terrible idea.

He played that role behind Torres during the Benitez years. Unfortunately, Rooney isn't really a 9 in the traditional sense. He obviously gets goals but he's best suited to play exactly where Gerrard would play in your hypothetical lineup. Coincidentally, this is where Rooney plays for Man Utd.

It would be interesting to see if Rooney/Gerrard could interchange positions and drag defenses around by moving to the side to allow runners to come in. While this could be dangerous because there's such a short amount of time to gel, they are top level players.

Lampard playing in the back along with a DMC wouldn't be a terrible idea. He apparently has been playing this role for Chelsea (not a chelsea fan wouldn't know).

Barry doesn't get enough love. He plays a hell of a lot of minutes for the EPL title winners for a reason.

What don't you like about Parker?

Johnson has been a loyal servant for Liverpool but I never really warmed up to him to be honest. I'd put in Micah Richards over him. Walcott's got speed to burn and he's been crossing much better. I think Walcott's got that RW/RM spot locked down.

I'd throw in my hat for the Gerrard/Rooney frontline. Especially, if they could play off each other's positions.

The only CM who'd be playing in your hypothetical formation would be Barry and Lampard. I have no problem with it as long as Lampard is disciplined.