If BC is terrible offensively again this year, Addazio won't get to replace Loeffler. How could he go to Bates and ask for more money to find yet another play caller? And what in-demand OC would want to be Addazio's fourth Offensive Coordinator in four years? It would be the lamest of lame duck positions. If the Offense is last again in the conference and among the worst in College Football, than the issues were clearly not Todd Fitch or youth.
It is comforting that Addazio hired a friendly face. He probably knows that he can't screw this up, so he might as well go with someone he can trust. If Loeffler has great success and moves on to better things, then Addazio can take a risk. Then he can hire an untested assistant. But for now he needs support and someone who will not screw up. Loeffler may have a limited upside, but he won't be any worse than last year. But then again, no one really could.