Actually Walt Corey was a very good coordinator. The problem was that he asked a guy that was similar to John Randle to play like Ted Washington. I think Jeff Wright was a lot more talented than big mouth Smerlas, but they had a completely different skill set. To this day, Wright's immense talent is unappreciated, as he passed under the radar, playing out of position.
If we had a Ted Washington back then, we would have won at least 3 superbowls and maybe gone to more than 4