Going backwards isn't trend setting.
A couple of good showings vs marginal teams isn't the way to remaster your Offense. There's no reason to believe that if the Bills shifted to a lot more Josh under Center that the trend would hold. Obviously teams would change the way they defend him, don't you think?
The Offense is, across a whole year, pretty stout as is, despite roster changes each season.
Pretty much. College Offense has predominated in the NFL for a while. Lots of coordinators from the college game. Plus with the dominance of RPO, the shotgun is king.