When Ben Roethlisberger came into this league, and won his first Superbowl; the offensive line was seen as a strength of the team. Bill Cowher liked to run the football, and to do that he needed a great offensive line. Big Ben had two pro bowlers in front of him that season in future Hall of Famer Alan Faneca and 2 time all-pro Jeff Hartings. Outside of those two, Marvel Smith, Kendall Simmons, and Max Starks were all very solid in their own right as well.
As Ben grew as a passer throughout his career, and as he gained a reputation for extending the play and throwing pass rushers off like rag dolls; the offensive line became less of a priority.