The 2016 Steelers featured one of the league's most explosive offenses and made the conference championship for the first time since 2010, but it's not as if all is rosy in Pittsburgh.
Ben Roethlisberger quashed retirement rumors at the beginning of the month, but we'll have to wait and see if the quarterback's late-season regression was about more than injuries. A defense that was a bit better than average lost linebacker Lawrence Timmons to the Miami Dolphins and wasn't able to make big gains to a front seven in need in 2017 free agency.