How about instead of allowing long drives, get off the field quicker? I like how the only option is turnovers or long consuming drives without a big play. Find that middle ground. Allowing long drives, even if they result in FGs, isn't a good thing. Our defenses in the past were homerun or bust. If we weren't getting turnovers, we got cooked. Can't depend on turnovers at the rate we got them, especially come playoff time. Need to find a way off the field on 3rd downs. Find a way to stuff some plays for losses, pressure the QB, make good plays in the secondary, make those open field tackles. This defense is poor at all that.
It's like in baseball. If your only strength is to hit homers, but can't win any other way, you won't be that good. As you can't count on those consistently.
A lot of Dallas blowout wins, came when they got a crazy amount of turnovers, usually against weaker teams.