SI.com's NFL personnel expert Michael Lombardi
evaluates the Saints' units.
Brees is the guy generating the big plays in this offense.
Reggie Bush yet to be a force; McAllister coming off ACL.
Grade rises if '07 first-rounder Robert Meacham contributes.
Shockey's arrival gives Brees added target in this spot.
Saints' success relies heavily on protection from Brown & Co.
Finally has depth but must get pressure from Smith and Grant.
A healthy Vilma brings much-needed speed and athleticism.
In desperate need of some lockdown cornerbacks.
Training camp battle doesn't bode well for placekicking stability.