Your "The Good" assessment makes Patterson out to be a top 10 pick in the draft. Not saying he can't be at some point but he isn't there yet. He has shown the potential to be really good. But he has also shown the potential to be really bad.
It all starts with pressure. And that's where Patterson is the weakest. Enough pressure and maintaining your gaps and Patterson becomes average. And he doesn't have AJ Brown to throw to at Michigan. I do think Taric Black can be good at WR but he isn't Brown just yet. I want to see just how aggressive Lea will be on defense.
This is really the issue with him - he's inconsistent.
He's an athlete with a strong arm so he can make some plays and make some throws. His footwork is an absolute disgrace and he routinely makes throws off his back foot unnecessarily.
His short range accuracy is good but it could be great if he just set his feet and stepped into his throws, rather than drifting backwards which he does often even with a clean pocket. I disagree with Koon that he leads receivers well. He can at times but again it's inconsistent. He throws a decent ball down the seam but his deep ball on the sidelines is below average. He generates all his throwing power through his arm rather than his legs and hips which makes it difficult to consistently throw an accurate long or mid range pass.
He has a tendency to lock in on one receiver, especially on short routes, and will throw it into coverage. ND should get a couple shots to pick him off.
He's elusive in the pocket and has some wheels. You have to keep him contained with pressure from all sides or he will buy time for his receivers and burn you. He's careless with the ball, especially when he's dancing around the pocket. He's going to give the defensive line chances to swipe the football away from him.
If he's on, he's the type of player that could be a difference maker. If he's off, he'll turn the ball over and hopefully give ND's offense a couple short fields to work with and will help put points on the board against a defense that may be stingy.