We should wait to write the epitaph after the 2019-20 season ends. In short, if we were to write it today, Iowa is in deep trouble for 2020.
There will be a new QB with very little experience. Tristan Wirfs and AJ Epenesa are likely to turn pro after their junior year. Chauncey Golston is a junior and had a better season than AJ Epenesa, and if Chauncey turns pro it will be another big blow. There are a few other seniors, but this was not a senior dominated roster this year. It's just that some of the key underclassmen players are leaving, and the Big Ten schedule which was daunting in 2019, is more daunting in 2020.
My belief is that Wisconsin, which outperformed my 2019 expectation, will again be atop the BTW in 2020. I see Minnesota coming on, but Minnesota has not had the recruiting success to overcome the Badgers.