The theme of the Dallas Cowboys' offseason has been defense, defense, defense. An overhaul was in order for the Cowboys after they had one of the worst units in the NFL last season, which was the biggest reason Dallas fell short of the playoffs . "I'll tell you, when you have the challenges we had last year, there's no place to go but up on the defensive side of the ball," Jerry Jones said in March. "Had we played a lick of defense last year, we would've had ourselves, I think, a real playoff run." While it remains to be seen just how effective these moves will be, the Cowboys addressed every single position of need throughout the offseason via free agency, trade, and the draft, and it's hard to be mad at anything they did. One of the more underappreciated moves the team made was the free-agent signing of cornerback Cobie Durant , who has mostly flown under the radar since being acquired. Cobie Durant is Cowboys' most underappreciated move Former Los Angeles Rams cornerback Cobie Durant.…