I think diaco has shown something. you just refuse to look at it.
if you can't see the difference between PP and BD, then maybe your last name is either Pasqualoni or Hathaway. at one point, you want to suggest it all comes down to wins. but then you suggest that diaco "barely beat Army and Nova". But he did beat them. so which is it? Again, I think you have your perspective, and no matter what happens, you'll continue to say "show me something"...
I liked the PP hire on paper. CT guy, NFL experience, and had college success. hindsight, wrong hire, wrong time, and simply the wrong coach for this program.
NEVER under PP's watch did this team move forward on any level. for three years, this team got worse in almost every category. I could be wrong, but I don't think PP ever won two games in a row (in almost 3 seasons)... Weist came in and won 3 to wrap up the season. Sure, P almost beat Michigan, and that may have saved him, but he didn't win.
In less than two years, Diaco has this team competing and believing. you can see the improvement on the field. you just need to look.