Kyle Dugger has already been pretty good, and has earned some reputation as a very good box safety, but I think this year he's going to really take off. We're a stupid number of bodies deep at hybrid safety now, and all but Mapu (who has reportedly been picking up a lot and looking really natural in the LB role, at least) have good experience in the defense now. While losing McCourty hurts (though his decline was also a concern before officially returning), it means that we can play a lot more games in the middle of the field. You don't know whether Dugger or Peppers is going to drop out, and you have enough options that you don't have to saddle Dugger with manning up on the tight end with regularity. You can let him run wild and play instinctually and make it really annoying to attack the middle of the field.