The o-line got whooped tonight, but they were up against it and Brady did them no favors. I think they are fine in the short-to-mid term. The problem is the offensive scheme and the pathetic receiving corps.
The D is a big issue with tons of holes to fill. Hairston and Bishop are promising playmakers. Walker might turn into something and Oliver is good when healthy, but we otherwise need replacements at safety, both ends (assuming Bosa walks), both linebacker slots, nickel corner and another starting caliber corner to push Benford.