This answer sucks, but it'd be the overall play of the defense for me. I expected it to be better because I thought a lot of Heatherman, I thought a healthy Bain would be a massive difference maker, and I thought we upgraded the talent. I was optimistic it could be a Top ~30 unit. It was far better than that.
If you want specifics within that, I would say Jakobe Thomas, Keionte Scott, and Akeem Mesidor.
The safeties were ABYSMAL last year. Poor angles, no communication, zero physicality. The only kid we had who could even cosplay as a football player was Meesh Powell, and he wasn't physical at all. Much more of a coverage kid. Jakobe Thomas blew me away this year with his physicality and intensity. What a massive upgrade. Keionte Scott, what more can you say? Both of these kids were almost afterthoughts at their previous schools and even when they hit the portal, it's not like they generated any national attention. All they did was go out and be leaders for arguably the best defense in America.
And then our homegrown boy, Mr. Mesidor. Good lord. We had entire threads in the summer here about who should be playing over him. The answer to those should've been "not a cot **** dude in America". I really liked him as a player to this point, but I'd be lying if I said I knew he had this in his bag. He is going to get some real first-round discussion in April, and him and 4 turned into the best Edge combo in the history of the school. Not bad for a kid many were trying to turn into a rotational player in camp.
So really, the defense shocked me. We went from the best offense in America last year, bar none, and a completely rudderless sieve of a defense, to very arguably the best defense in the country this year. At least the best defensive front, with perhaps 2 first-rounders, and Moten can very well turn himself into a high Day 2 pick with another solid year. And while I could point to **** near every kid as being part of the turnaround, the 3 I highlighted are the ones that really exceeded my expectations and surprised me the most. Sucks we have to replace all 3, but that's why Mario is here.