Come on now. The offense we are running is a combination of what we ran under Leach, and some running game principals that have been around for decades. We're not the only ones doing it, we're just the only ones doing it well, and doing it at a school that can recruit tier 1 talent.
As for the defense, for the most part, defense is defense. If you run it well, and/or have the athletes, you can make just about anything work. OU fans like to dog the 3-4 we've been running, but it's what Bama and half the NFL run. We just either aren't teaching it right, or we don't have the athletes on D currently. If its the second thing, then it wouldn't matter what scheme we ran. Also, in 2015 our defense was pretty darn good. Top 5 nationally in D efficiency. Mike Stoops didn't forget how to coach defense between 2015 and now. But we don't need some exotic scheme to be good/solid on D. Matter of fact, I think we'll be just that this year. And it won't be b/c we changed D schemes, or b/c Mike magically learned how to coach defense.