I've been thinking there are two possibilities where McVay's play calling may lean. On one hand, with a much better defense, he may be more aggressive on fourth downs, thinking that his D can stop the opposition and he'll get the ball right back. The use of 13 personnel in the red zone will enable him to run or pass, and the idea of a fourth and say three on the ten yard line early in the game will not phase him. The other thought was with this defense it's important to grab any points when you can, for playing early with a lead will make this defense so much more formidable. Take the FG in the earlier example, play solid D, and get the ball back for a drive to put you up two scores. Either way it will be fun to see how much this D will affect McVay.