Would your hypothetical new coach

Also have exhibited the same Kelly-trademarked assholery, mind-numbingly baffling decisions (like passing 45 times in torrential downpours), and other similar head-scratchers that Kelly has produced over his tenure?

Yes, I'd want him replaced the same as BK for being incapable of beating elite teams.

One problem with your hypothetical is that we have more than 3 years of Kelly history, which should not be ignored simply to fall back on the "last 3 years" of results. Nobody should be thrilled/satisfied with those results.

So the pertinent question, you regularly ignore, is what evidence exists that Kelly (or any other coach) can get the team over the hump agaisnt elite competition?

What's Kelly's evidence?