The Seattle Seahawks have many strengths, which is why fans are excited about what might happen in 2013. A team can always improve, but the 'Hawks are arguably a team that has many pieces already in place.
For Seattle to succeed, some positions simply need to mature a bit more and play as a unit. Other positions could use an upgrade or a measure of depth.
Over the last couple of seasons the Seahawks have not been overly active in the free-agent market, but that could change going into 2013. Many needs may be filled through the draft, but one assumes that Pete Carroll and John Schneider will at least look around.
For the purpose of evaluation, here is a grading scale for measuring the strength of each position on the Seattle Seahawks roster heading into free agency.
A = No free-agent signing needed
B = Minor free-agent signing needed/desirable
C = Major free-agent signing needed/desirable
D = More than one major free agent needed/desirable
F = Whole group could be replaced
Consider the word "desirable" to mean that certain positions may be acceptable going into 2013, but could certainly benefit from an upgrade.