...what could KF offer as evidence that he 1) cares about such uncoachable attributes and 2) can adapt schemes to play INTO player attributes?
Scheme creativity is non-existent at Iowa. If you look at all of the elite teams I think one of the commonalities among almost all of them are specific packages meant to take advantage of individual player abilities. We just don't do that and we've seen some nearly wasted talent because of it (Damian Sims, for example).
If any team is going to stick solely to a steady, predictable style of play, the only way to win is with nearly flawless execution. When you don't have that (and we didn't this year) you're going to take a hit.
I think KF's style was great for turning a program around (focus on fundamentals, emphasize execution, and minimize mistakes). But once you have the foundation in place and find yourself able to compete with most teams, I think the next step has to come from scheme creativity. Create ways to put pressure on the opposing defense and maximize your game breakers' abilities. That's something we just haven't seen in the Ferentz era, and it's something the top tier teams make a point of doing.