A guy of interest for OC under Urban IMO:
I've always felt Kevin Wilson is more responsible than Ryan Day for the sudden explosion of offensive at tOSU. I believe he brought the teaching principles of the Leach passing game (to combine with the running game) from his days at OU. I remember when Urban hired him and thinking it was a shift in offensive philosophy for him.
He then started recruiting kids from spread HS programs, including Texas (and Lake Travis). Day may call the plays, but I believe Wilson had A LOT of influence on the offensive install.
I also believe that these offenses that are related, or derivatives, of the Leach teaching style basically call themselves on game day. The players on the field determine the call much moreso than a good play-caller in the booth or on the sidelines. That's why Lincoln Riley can call plays and be the head coach and Herman cannot. Herman's offense isn't as simple and efficient as the Leach system in a world where players only get 20 hours per week in short spurts of the year with their coaches.
Mike Leach is pass happy by choice, not because you can't have a power run game component attached to it. The genius of the system is how simple it is while still compromising just about any defense known in existence, as long as your offensive line holds up. College offense is all about simplicity, repetition, speed, and leverage of the opposing defense before the snap. It makes teaching and play-calling simple and just about anyone who can learn chalkboard talk can excel at it. That's why the new OC after someone leaves is usually the inside receivers coach. Rinse and repeat and barely miss a beat.
Oddly, this system was invented decades ago in high school football in the state of Texas.. It's also been beating us for over twenty years and the state flagship, outside of one year running a veer version of it, has never even considered it.
It's a gimmick, we are told. Just a hint, all four of the national titles won at The University of Texas were won running some type of option football. The Leach system is option football in the air (with all the power you want attached to it).
And we wonder why this program hasn't won consistently in decades?
To make matters worse, the dipshit that coached here for 16 years and refused to install it, then goes back to UNC and hires someone to install it and starts to break offensive records thru the air and the run game without anything near the talent he had here.
Kevin Wilson:
https://en.wikipedia.org/wiki/Kevin_Wilson_(American_football)