Honestly, this one's over
Pittsburgh is about Defence. Unfortunately, the Steelers don't have the horses after years of success which forced the team to draft in the late teens and in the twenties/thirties. The young guys, Heward and Hood, Mclendon, the corners, need some time. Dont forget it took James Harrison 5 to 6 years to make the team and play at a high level.
With a down year, they can restock on Defensive talent. Can't see Harrison or Polamalu making much of a difference this year.
In the meantime, enjoy a blossoming passing game and hope a running game can be found.