I agree with you but careful about predicting any kind of downturn for Wisconsin
That said, their offense took a huge hit this off season with Taylor and Cephus leaving and their defense while returning most of the players loses two phenomenal linebackers in Baun and Orr. We will have a hard time replacing Winfield but they will have a similarly tough time replacing those two.
The fact that we return so much talent on offense is the main reason I am not nearly as scared as people like Veritas about our prospects on defense next year. We should once again be able to score a lot of points meaning we don't need the defense to be outstanding we just need it to be solid. Hopefully this new OC can build on what we do well and help push the offense to new heights. As most of that unit moves from under classmen to upper classmen there is the potential for this offense to take another step and reach an even higher level of play which is pretty amazing to consider after what we did last year.
Rossi has shown a real ability to use the pieces he has on defense and be successful. I am willing to trust that he will be able make it work with new starters but guys with a lot of playing time under their belts as well.