i think the league as a whole has not really gotten any good o linemen lately. Sure there is dallas, but alot of teams are struggling with o line. Seems like every athletic college guy is going OLB or DE, not that many great o linemen in the years of late.
Think Fisher needs to simplify the offense. Get down to Xs and Os again, and just line up and hit the other team. Denver tried to do the ZBS system this year, it failed miserably, and they went back to pistol and shotgun sets.
Maybe the day of a ZBS system is just gone with the type of talent of o line in the league this day and age.