I agree on QB. Jackson at U of L erases a lot of mistakes. To be honest, I didn't think Bud and big Z performed at the level they could have IMO their last year. I haven't seen enough of the RS WR's to say they are improved. Having two DE's like those two should have been a DC's paradise.Bud, Zedarius, Meant, Melvins Lewis, Josh Forrest, Badet, Johnson, Baker, many of the RS WR look very good.
I think the biggest issue right now is that we don't have difference makers at the key positions (QB, dline, and LB). That makes the development of the secondary look non existent, and makes the online worse than it appears.