I can’t speak to Northwestern, but Wisconsin is just horrible to watch. At least they typically are. I’m convinced Wisconsin is good at defense because they grab, mug, flop, and just make a mess of every game.
I agree, though, Fran would need to adopt that style in order to make his roster work. What you said about repetition, communication, etc. makes a lot of sense. I’m not a basketball guru but I can tell there are a lot of things not working with the Iowa defense and to my untrained eye the issues are always the same. They aren’t tough, they aren’t quick, and the effort seems pretty lax. Just my opinion.