Agree with most of the grades otherwise. I'd mark Andersson a C- as I think he's a bit of a plug. He's good at faceoffs and can PK but otherwise he offers little. I was surprised he got such a quick promotion from Grand Rapids originally, same as with Emmerton.
I think he fills the role expected of him well, and justifies the amount that he's paid. Bear in mind that the Wings have one of the top-ranked PKs in the game. I don't think the role of Andersson, who is second only to Miller amongst forwards in total time on the PK (and has more than double the #3 forward in that category) in that should be disregarded. And it goes without saying that the PK is extremely important to any team.