Safety is a way bigger need then some might realize. We haven't had our two starters at safety actually be able to complete a whole year together since being drafted. Injury is always high with the position.
#2 CB is a huge need of course, and our piss poor pass D not being able to count on safety help can make it look even worse. Look back even when we had a good #2 CB, we were still abused in the passing game because of poor safety help from gems like Jon McGraw and Mike Brown.