What went wrong this year?

Obviously this season was dissapointing when you look at what could have been with the squad we had. Just wanted to gather everyone's thoughts on what the coaches/players did wrong.

My thoughts on main issues:

-Offensive line letting Mendoza get sacked way too much and not run blocking well enough.

-Missed kicks all season, but especially was a major factor in FSU, Pitt, and NC State losses

-Some crucial dumb coaching decisions (especially in Pitt game the 2-pt conversion attempt and taking out Mendoza late in the game)

Anything else that you guys think? Just wondering what to look at for next year if we want to see improvement. Also, a lot of people online put the majority of the blame on Wilcox and Bloesch, but what exactly did they do so wrong? This is a genuine question, I am just not so knowledgeable on coaching strategy.