What Smith needs to do is get his weapons on the field at the same time.
For me, the strength of the English challenge will depend on how well he can harness the attacking skills of Burrow, Roby and Pryce at the same time. If he can get them all on the field at once, they can ask serious questions of the Aussies in defence.
That has been the number one issue in England/GB upsetting Australia over the last 25 years: a lack of penetrating attacking ability, combined with a (regular as clockwork) loss of composure...
They are their main issues as I see them.
I think they will try to play a more fluid style than Australia at the play the ball. At least, they will need to do so to win.