Starks was clearly our best o-lineman last year. He's not that bad of a LT and didn't play bad for the Steelers considering Ben takes an eternity to get rid of the ball.
The only reason Starks isn't on the team is that Tomlin has some type of issue with him. I don't know what it is... but it's obvious. Tomlin has beeing trying to replace him for years and he couldn't. Tomlin's stubborness and his unwillingness to bring back Starks has hurt this team.