Well, I wouldn't say we "need" another starting pitcher but I think/hope we will look to add another one. It doesn't harm us by adding a potential stud to the rotation via Free Agency since it'll only make us that much better on the 5th day.
I'm worried signing a big FA to be our 3rd or 4th best starter when we already have a stud rotation, will not help all that much this year, and will hurt in just a few years when we need to be spending big bucks jsut to keep the guys we currently have on the team.