It's important to deep dive on what exactly "player development" means at the QB position. I typically think of it in a few key categories, such as:
1) Knowledge of Offense, Understanding, playbook
2) Throwing development, accuracy, technique
3) Quarterbacking mechanics, footwork, ball handling
4) General athletic (physical) development
The most frustrating thing for me is the lack of success in categories 3 and 4. When we look back on our frustrations with Iowa quarterbacks and lack of progression, most fans get caught up in points 1 and 2. They says things like, "he's inaccurate, he stares down receivers, and he doesn't have much feel for the game". All of which might be true.
But I'm even more disappointed with the lack of progression in categories 3 and 4. I guess this is specifically a criticism of S. Petras, who's footwork seemingly got worse over the course of his career. And who lost all mobility and athleticism over the course of his career. Not only do we not have/recruit dual-threat QBs, but our guys are going to get a lot slower and less athletic during their careers... Is it a crazy thought that a young QB recruit could develop over the course of 2-3-4 years and get bigger, stronger, faster and in better shape?? Watching Deacon this year REALLY bugged me too. How could you be that out of shape? What are you doing? What on earth were you possibly doing this summer before the season? Absolutely crazy to me.