I'd bet more people leave HBD, or make up their mind to leave & maybe hang out giving it a half effort for a season, during coach hiring than any other time of the season.
It's absolutely no fun. You don't get to see your coaches perform during the season. You have not idea if it worth the effort, as there's no direct feedback if your prospects progresses above or below normal because of your coaches. You can try to figure it out after playing a lot of season, but even then it's more of guess than anything else, because WIS thinks it's cool to not share how the game works.
Coach hiring is dominated by tricks that it takes a while to figure out. How to wait for the right cycle to raise (or make) an offer. How to save a lot of money by offering different roles. How to tank coaching at 1 or 2 levels & max it out at others. All well designed to drive away new HBD players.
Coaches refusing to take a different role or coach at a different level no matter how much money is offered is silly. Not a realistic simulation. I can't see any benefit to the game by a coach who wants to coach at AAA refusing an offer for his demands at AA or HiA.
Anybody who complains about any aspect of coach hiring is on the right track. There are too many thing wrong with it to criticize any particular complaint.