I agree that some of the application of the Rooney rule has been uneven. Many interviews are cursory and a waste of time, but I don't completely devalue the reasons for the process. I'll give you an example that's become a very recent problem. When you look around all 32 NFL teams, how many have an African-American in an offensive coordinator or QB coach position? Sure, you can find defensive coordinators, linebacker coaches, defensive line coaches, secondary coaches...but there are only 3 teams that currently have African-American offensive coordinators. Harold Goodwin (Cardinals), Pep Hamilton (Colts), Jim Caldwell (Ravens). With Jay Gruden getting the head job with the skins, Hue Jackson might slide on up in Cincinnati to make it 4.
Now look at the head coaching vacancies and who teams are interviewing. With the league designed as it is now, teams are increasingly looking to offensive coordinators as head coaches. It's a problem that very likely doesn't sort itself out on its own. I dug this article up from 2012. Just have a read and give it some thought.
http://espn.go.com/espn/commentary/...de-nfl-hires-offensive-defensive-coordinators