My observations: The noticeable drop off for the Ravens is in the secondary. After the top two corners (Smith and Webb) and Elam at strong safety, there's not much there in terms of experience. At this point, Stewart is the starting free safety and Chykie Brown is battling Asa Jackson for the third cornerback job. That's why no one should be surprised if safety and cornerback is addressed early in the draft.
At defensive line, the Ravens are hoping Williams, a third-round pick from a year ago, steps up to a starting role. He'll team inside with Ngata. There has been increasing buzz around Lewis-Moore, who will begin the offseason as the top backup to Canty. The Ravens are going to give him a chance to earn playing time after he spent all of last season on injured reserve. Still, there's enough good prospects at defensive line in this draft that the Ravens could take one to lessen the void left by Arthur Jones.
The deepest position on the Ravens' defense is linebacker. All of the outside linebackers return from last season. The question is whether Arthur Brown, a second-round pick from last year, can replace Jameel McClain as a starting inside linebacker. For this reason, the Ravens have been linked to Alabama's C.J. Mosley, the top inside linebacker in the draft.