It's a really good idea to get guys who relate well to the players. Not saying non-minorities can't, Butch Jones was a great example of a guy all the players loved. A really good example of the divide is Kuligowski vs. Roach. But having minority coaches when your team is filled with minority players is really important at a place like Alabama (or the SEC in general). And yes, while it may seem minor, it would be used against UA in recruiting if they lacked minority coaches.
Minority hires are not just about political correctness. It looks like any of these coaches would be great hires. All great talents. Having diversity in the coaching staff, which brings different perspectives and experiences to the table is a good thing. It also brings difference points of connection for the players. Just my 2¢.
Building a little on what @Brandon Van de Graaff said ...
I agree with diversity but not as an appeasement to the political people. I believe the diversity is very healthy and understand the part about relating to the players but they need to know what they are doing. If so go for it. It should also be part of the job description - "Demonstrated history of relating well to players". As someone said Butch Jones qualified for that but he can't make himself a minority. He would be discriminated against if it was purely based on skin color.