I listened to a podcast a few months ago from a former NBA personnel guy who now runs
https://cleaningtheglass.com/. He was talking about projecting young players, and things that generally improve and things that generally don't. One of the things that generally DOES NOT improve much is feel for the game.
I find that concerning regarding Iowa's defense. From some of Coach McCafferey's comments after the last game, he made it sound like the players don't "think" the game very well on the defensive end. I am not sure if that is something we can expect to change much with this crop of players.