By Eric EdholmJerry Jones surprised many when he made a series of trades down in the draft to accumulate more picks. It was clear he believed the team needed more depth at a number of positions, but so far the 12-man draft class has come up short. Third-round LB Jason Williams, the top pick, hasn't played much since returning from injury. Fourth-round LB Victor Butler flashed with two late sacks against the Panthers but hasn't seen the field much since. Fifth-round S Mike Hamlin backs...