I actually wouldn't mind seeing Mccourty play some safety in passing situations again this year. When he can see the ball and the play in front of him he has terrific ball skills. With the emergence of Dennard, your outside corners could be he and Moore with Arrington in the slot. Put Wilson and Mccoury at Safety with Chung on the bench in a heavy pass defense set.
Why take our best corner- and a top 10 one at that, at least for this year- and move him to S? That weakens our CBs significantly and asking Arrington and the rook Dennard to cover would leave both our corners exposed. I just do not see the reason in moving McCourty to S when he's been playing very good at corner.