Some are born leaders, but some aren't. Look at how Kelly and his staff developed Te'o over the past couple of years, compelled him to become more vocal and demand more out of his teammates and not simply himself.
I like Mike Brey and very much want to see the program take the next step under his guidance, but it's always something with him. There's always some excuse for why his teams fail to come up big when it counts the most. He's earned a certain amount of leash based on his track record and some of the hoops he's jumped through along the way, but "'til death do us part" is no longer part of the lexicon in this business.