1. We've got a number of guys that have been in the system 2-3 years now. I'm not much of a fan of BVG, but Onwalu, Tranquill, Morgan, Redfield, Martini, Luke, Watkins, Jones, Trumbetti, J Hayes, and Bonner all have to have a solid grasp of the D at this point, it's not just Schmidt by himself trying to get everyone else aligned.
2. This year's LB group will be better than last year's. Jaylon Smith may be the greatest defensive specimen we'll ever see, but he was starting beside Joe Schmidt and a guy that had only played LB for two years. I expect Onwalu to be much improved, Morgan to make plays that Schmidt never could, and Martini and Coney to form a solid 1-2 punch at will.
3. Cornerback should be more than solid. Luke is an unheralded but solid corner, and Russell is being replaced by a true shut down corner in Crawford. Watkins should be back by fall, and Coleman/White are quality 4-5 guys. Not to mention the influx of freshmen on the way.
4. Safety is a big concern, but safety kind've sucked last year. If Tranquill is healthy I trust him to be as good or better than Shumate. I don't see Redfield being worse than last year, and maybe Studstill steps up. All in all at worse I would think this is a wash from last year.
5. The D-line will be less reliant on the top end of our depth chart. Jones/Cage will be better than Tillery/Cage at NT. Rochelle sounds like he's getting even better and has a solid backup in Bonner. I like a Trumbetti/Hayes combo more than Okwara. Romeo was solid last year, but his sack total was artificially inflated in some ways, he wasn't beating people with real pass rush moves. The massive downgrade is at 3T. Someone needs to light a fire under Tillery because we need him to make plays this year. Still I think what we lose in Day will be made up for with improvements from other positions.
So all things considered, yeah we lost some future NFL picks, but we're deeper and more experienced than last year. I'm not buying the pessimism right now.