a). Sheldon Day replacing Kap will quickly be seen as an upgrade [I like everything about Kap, but my opinion stands]. The Dline backups [Hounshell, Kona/Tony, EV, Jarron, Isaac, maybe Romeo/Ishaq], will help form the nation's best Dline.
b). Spond/ Foxcarlo/ Shembo one year older will be and upgrade on their selves one year earlier. Jaylon backing up many places, plus Ben and Ishaq/Romeo/Doug, create an upgrade everywhere backing up. Grace in for Manti? In my opinion, the minor fall off there will be made up for [and more] elsewhere. We will have net-better-speed. Controversially, if Grace is good, this unit will also be an upgrade.
c). Russell/ Jackson/ Farley --- compared to themselves --- same logic as above. Motta is the toughest loss on defense, as he made most of the tackles in the tougher games when plays got away from Diaco's scheme, and he was the on-field general. But we are absolutely loaded with safety talent. People say Collinsworth. People say Shumate. People say Redfield. I say Baratti. Whoever's right, he'll be a good one. Upgrade here too.
Bottomline: nobody's going to be anxious to play Big Lou's Bunch of Maulers.
Gonna be fun to watch, fellas.