Beside McDermott, you have to tip your hat to the Pegulas' for learning on their first hire and not making the same mistake twice. The Rex hire (I still shutter when I say that) was a disaster. I get it, I do understand the thought process then, but it quickly became apparent he was not the answer, to anything. All hype, and no substance. They removed him as soon as it was prudent to do so.
In McDermott they hired the polar opposite. An unknown, a high-character guy, a leader of men, someone people instantly trust, a principled person who works his plan (the process), and, of course, a high football IQ. He admitted it would take time, he (and Beane) had a plan and they've stuck to it. The Pegulas' have supported them in that plan, and the results are showing.
Everything he does is the exact opposite of how Rex did it. And that is good! And it is a credit to the Pegula's for taking the risk. They learned the hard way, but once they realized their mistake, they acted swiftly and smartly.
What is the saying? "fire fast and hire slowly." This entire scenario is support to that wisdom. Good work Terry and Kim, and to Coach McDermott and GM Beane.