After a bit more research on my part, apparently the generics don't effect the coverage schemes of the CPU. There are a few custom PB's floating around that eliminate most press and 0 blitzes, but this in-CFM coach swapping is about as much effort as I am willing to give to AI playcalling. No time for multiple profiles, etc.
I love the game regardless, just wish the AI was smarter on D haha.
I am still wondering as to when to retire the AI coach, and if the generic PB sticks with that team. If anyone has that info, I would be eternally grateful