We are averaging one title every four years. If KO coaches for another two decades, that's five more titles. Yeah, I know… Lots can happen but it's fun to think about the possibility of 9 or 10 championships.
You are calculating this incorrectly. It cannot be viewed as 4 titles in 15 years, projected forward.
JC's rate of national titles is 3 in 25 years.
But this is not about JC's rate of winning titles, in any case.
KO has been coach for 2 years. And arguably, given the suspension last year, this season could be viewed as a stand-alone one out of one, if you will.
So, projecting forward, we could be winning additional championships at a "low rate" of one every two years, or a "high rate" of one each year.