Not every business person can handle/lead the MU BoG. It certainly isn't the same. Brad Smith and his type are constantly moving and doing new things. Its the difference between he and a local buisnessman who's content with where they are. I doubt Smith stays at MU for long. There will be another opportunity for him somewhere and he'll take it. Gilbert was far from incompetent, unless you count Jim Justice's POV, which if you do that, you'll lose credibility.
Miller is known, and its not a serious tone. He's on TV dressing up in costunes trying to sell Kia's...I, nor many, would ever open my wallet if he asked me to do so for MU. I can't take him seriously at all, which is why he's not the AD and why he's running for political office.