This is true, but we were hit hard by injuries last year... linebacker was one of the places hit the hardest. Andra Davis missed a few games, and he's our best linebacker. Boyer and Taylor were out for the season, who are some of our "veterans" at the position. Sean Jones was out, who could help tremendously against the run. We lacked Courtney Brown, but not that he makes a difference... Ekuban did quite well in his absense.
In a division full of young, up-and-coming QBs such as Palmer, Boller, and, of course, Roethlisberger, in a few years a great secondary is needed. This is why it would make sense to get a good CB... gotta think about our current personnel and who we have returning next year.