Guess who built that roster? Jimmy.
It's not an accident that as he rebuilt the Miami Defense, it became more and more obvious that Marino was declining. Amazing that you think that Johnson was washed, a mere 2 years after winning two consecutive Super Bowls. Had Jimmy continued to build that roster out, and been able to move on from Marino(Which wasn't ever happening, because South Florida would have revolted), odds are Jimmy would have found success. Unlike Elway, who accepted what Shanahan brought in when he showed up , and was willing to change the way he played to give himself a better chance at winning, Dan was all about himself. When a guy plays for TWO hall of fame coaches and has one SB appearance, it makes you wonder if there's something wrong with the player, not the coach. Shula failed Dan by not reining him in, honestly, Don was probably cruising to retirement, the younger Shula wouldn't have stood for the one man offense.