You're a new GM and you just drafted a QB high in the first round. Lets pretend you haven't selected a coaching staff yet because you wanted to find the best talent you could, and then take it from there. Now lets pretend your sole purpose is to make sure that this QB never develops into anything. How would go about doing this?
I will go first.
I would hire a defensive head coach, with a defensive mindset. Then I would usurp said head coach's authority and hire the OC for him. The OC's system would be the worst possible fit for my QB's skillset and he would be a guy thats extremely system oriented and unwilling to change anything within the system in order to do things that the QB is naturally good at doing. Then, I would change the receiving corps every single year. I'd swap out the entire crew. Then I'd change the OC (and therefore, the system) every single year so that the QB never gets comfortable.
The head coach doesn't give a damn about the offense, and is all about the defense. He doesn't care about scoring points, he just wants avoid turnovers and control the clock so that his defense is well-rested and in the best possible position for optimal success. The system will always be a bad fit for his natural skill-set. The OC will always be a rigid guy that refuses to tailor the system to his natural proclivities. He will never gain comfortability within the system because it changes every year. And he will never gain chemistry with his receivers because I swap them all out every year.
If I was going to wreck a QB, I think that would pretty much do it. How would you wreck him?