• After a very average rookie season Le'Veon Bell burst onto the scene with an incredible 2014. 2210 yards of total offense and some impressive games throughout the year have vaulted him into the ‘NFL's best running back' discussion.
• Once a major weakness, the Steelers' offensive line is now one of their strengths. Kelvin Beachum was fantastic in pass protection and Ramon Foster was solid, with the rest of the line all coming in as Good. Maurkice Pouncey was never as good as the hype early in his career, but he's improved to the point where he is now better than average.
• He struggled for playing time early in his career, but Cameron Heyward is clearly the best player on the Steelers' defensive line. Coming off his best season, he took major strides as a pass rusher in 2014.
• While he is clearly on the downside of his career, Troy Polamalu is still a good safety. Better in an in-the-box role, he was our ninth-highest graded safety against the run last year.
Cornerback: There was a time when Cortez Allen looked like he was going to develop into a very good cornerback. That hasn't happened, and realistically, they need to invest in the position this offseason.
Outside Linebacker: Jason Worilds is a free agent, and if they can't bring him back it creates a major need at the position. Jarvis Jones hasn't panned out at they had hoped, at least not yet, and potentially losing their three best edge defenders in Worilds, James Harrison and Arthur Moats creates a problem.
Defensive End: While Cameron Heyward is a very good player, the rest of the Steelers' interior defensive line needs help. Stephon Tuitt struggled as a rookie while Cam Thomas isn't the player we once though he could become in San Diego.