I agree that a Burt/walker combination may not be so strong defensively. But we have been weak on the wings on both sides for a while. Commentators liked to blame grothe for rushing in, but the same problems occurred on his side when he wasn't playig, and also on the other side.
If our line speed improves and we work harder on the inside, I'm
confident tha we can improve defensively.
I'd be more worried about making sure that the outside backs we use work hard on kick returns, an offer some penetration whether with footwork, speed,
or power.
I wouldn't be using smith ahead of any o the guys who played in the centres in trials. Probably not reddy either until he's played a few.