There has been plenty of focus on what changes new coordinator Todd Haley will implement on offense, as well as how well he will work with QB Ben Roethlisberger. While these are material issues, there’s no doubting that Roethlisberger’s rare passing gifts and daring style of play all but guarantee that he will put his unique stamp on the offense no matter the coordinator — though whether Haley works to implement more short, quick passing with an eye on protecting Roethlisberger from the rush is something to watch, the way we hear it. A more pressing issue, we’re told, is how a potentially new-look Steelers’ offensive line jells. Pittsburgh could have new starters at both guard spots as well as at left tackle, with rookies David DeCastro (right guard) and Mike Adams (left tackle) possible Week One starters. Building continuity upfront can take time, so let’s see how Pittsburgh fares in that regard.