I think you need a speed guy to run the Wildcat and Dixon's strength isn't his speed. If you line him up back there by himself, the defense knows he's going to run it. I think our success running the ball is built off of the multiple options we have when snapped to Lee and then him deciding how to proceed based on what the D gives us.
But, he is our best player. It wouldn't be insane to give it a shot a play or two to see how the defense reacts. You never know.