The Heat promoted one of their assistants, Erik Spoelstra, who's now the youngest head coach in the league (37). As long as Riley is hovering around there, they'll never be able to hire any established head coaches. Nobody wants to be in a position of knowing that if they do a good job and actually win, they'll get rewarded with a pink slip from the glory-hogging egomaniac in the front office who'll find some new excuse for pushing them out of the way.