Look back at our history of coaches and tell me how many made it past 15 years. Sampson might have had he not been plucked by Indiana/recruiting violations. If they have 10-15 years of coaching left in them, it's highly improbable that age will be the limiting factor of their tenure.
You are focusing on a part of this age thing that I never brought up. Your point has nothing to do with why I'd prefer somebody younger.
I'll put it another way. Moser has been a HC for 17 seasons. I have a pretty good idea in what we'd get with him. And outside of two very good runs recently in the Dance, I think that ceiling is pretty close to my floor for what I want out of OU basketball.
I'm not high on McCasland either, but I could argue that at 7 years of experience, his best might still be in front of him. He might still be learning and growing as a coach.
Moser has been coaching basketball for 31 years, basically since the day he graduated from Creighton. He is who he is at this point, and I don't see that as a transcending coach at OU.
Take an assistant coach, especially a younger one, and we really don't know what their upside is. That is both a positive and a negative, but I'd like us to aim a little higher than guys like Moser and McCasland. Moser is riding the high of 2 good tournament showings. And yet, while fans of basketball have been signing his praises for a couple of years, he really hasn't gotten much interest in the coaching the community. ALL those basketball schools up in that part of the country, good teams, none went calling (that we know of).
I just think he is underwhelming. Great defense, which I like, but our offense would take a step back. That formula works at small schools. It works in a limited number of games in a setting like the NCAA tournament. But it doesn't work over the long-haul in a conference like the Big 12.