LOL, at least you can drop the whole "flat line" that you came up with when in reality you always knew you were saying Iowa was fading, and have admitted to that and reverted back to that.
If you would stick with the flatline, at least you can make a case. Iowa has "flatlined" at the 70% winning mark for the past 8 years pretty much. That means Iowa has been the 10th best P5 team over that time, are you arguing that "flatlining" is a "bad thing"?
As far as trajectory, ISU's trajectory increase dramatically from '15-'17, but what do you see for '17, '18 and '19? It is the same thing Iowa faces once your winning % is higher and you've had more success. It appears as a "flatline" that you are trying to claim is some bad thing.
2015: 51%
2016: 56%
2017: 63%
2018: 63%
2019: 64%