As being fairly new to MFN and all, I would still have to agree with what some of the seasoned veteran owners have stated. Speed is the back breaker on the D-line! Along with Strength, you can have some real QB nightmares. I have been fortunate to find some oversized LBS in drafts, switch them to DE, and with the weight gain , they are looking like sack happy monsters. Am even tinkering now with dropping oversized but high speed DEs into the DT position, since DT seem harder to come by. ( solid ones anyway)
Now this is in a 4-3 base. I had to switch out of the 3-4 in one league. I just couldn't generate pressure. But with the speed, even if when the pocket breaks down, the faster DEs seem to chase down a QB fairly regularly.
And all in all, I am more in the philosophy of in the law of averages, that a sack is more or less a drive killer! Maybe not always, but 2nd and 12 or 3rd and 17 is usually the kiss of death for an offensive possession. Seeing a Punter trot out or a kicker attempting for three instead of a team putting the rock in the endzone, is always what you want in a defense. And the turnovers, well that is just gravy.