OK this is a lot to read in a half of a pre season but as I saw it: DL a wall. LB's free to bust in and make tackles at LOS, rather then have a runner in their face 5 yard's downfield at the snap. I don't see a lot of D line sacks but I see them freeing up others to run in.
We shall see. put Fritz on a leash and let Fred Carry the load on offence, and D does the rest. I've see it before. 70's steelers come to mind.