Re: LB thought
I don't see Sylvester stopping the Steelers from adding a Hightower to the team. He's not even close in comparison with Hightower an absolute beast who blows people up when he hits them. Sylvester very well could play the pass better however.
Timmons has shown he can not be an effective OLB in a 3-4.
I don't believe Hightower possesses the pass rushing skills to be an effective OLB either.
My feeling on why Sylvester can not be the starter is last year in the preseason he did nothing when on the field. A guy in his second year should show some kind of flash that he is a player and he did not against very weak players who weren't even going to make an nfl team.