The defensive line will be improved over last year, but considering how piss poor they were last year I'm not sure if that's saying much.
Griffin is definitely an upgrade, and getting Noble back is also a positive. Salave'a and Haley should provide some depth in the rotation and Wynn and Daniels are both versatile enough to play tackle especially in passing situations.
Under the circumstances I think the team did enough to address the defensive line for now without going overboard and breaking the bank for someone like Kearse or Wistrom. After all, we did our share of overpaying for guys like Springs.
It would be nice if they would draft a young DT or DE stud next year so we can get some youth going up front.