Although it has become less of a talking point in recent years, offensive balance was once a constant chatter point on this site.
It all started in the Mike Martz era when the playcaller was asking Jay Cutler to drop back 30-35 times a game (or more). When Marc Trestman came in, he also skewed a little too pass heavy, at times getting near 50 attempts in a game.
That became much less of a talking point when the ultra conservative, ultra old school John Fox came in and went back to the old school run-first approach.