I don't pretend to have all the answers but some things are pretty obvious, improve OL play would have to be at the top of the list. Its not so much techique as it is athletism, UKs OL just don't have the athleticism to handle SEC DL and it has shown up week after week. They need to be more consistent, and to decide what their offensive identy is, Stools needs to be in on gameplanning, but and stop looking over the I'd shoulder all game, he hired him he has to trust him too.
DL needs upgraded, Johnson was very good, but the others are very slow, LB and DB play wasn't bad and are young for the most part, very athletic.
So I thing 3 things are big, get better in both lines, decide what you want to do offesnsively and once the offensive game plan is decided Stools needs to let the OC run it without looking over his shoulder.