The Cardinals have made a few moves in free agency to plug bodies into a few of their holes, but they haven’t managed to attract top-flight talent to makeover their roster. While they managed to sign Levi Brown to a more team-friendly contract, the addition of Adam Snyder won’t provide a significant boost to the offensive line.There were several high-profile guards on the market, but the Cardinals either chose to not pursue them or were not able to entice the likes of Carl Nicks, Ben Grubbs or even Mike Brisiel.On the positive side, Arizona had an under-appreciated defense in 2011. They should be able to pick up where that unit left off, but the addition of some help at linebacker would certainly help. They will also need to plan for the future and look at the defensive line.Players like Quinton Coples, Nick Perry, Luke Kuechly and Donta Hightower could be tempting in Round 1. While they would help the defense, it would be a mistake. The Cardinals need to solidify their offensive line.Bill Bidwill paid Kevin Kolb’s roster bonus for 2012. Not only does he need to get his money’s worth, he needs to determine if the rest of Kolb’s contract should be paid. Perhaps Kolb is the second-best quarterback on the roster, but the Cardinals need better protection to determine if a change should be made. Draft grades and analysis will operate with the following team needs in mind:Offensive TackleOffensive GuardWide ReceiverLinebacker, Inside and OutQuarterbackOffensive Line DepthDefensive Line Depth