Yes we have a novel idea here in the Land of Lincoln. We actually have these people you call "assignors" and they give games. These "assignors" are often current officials that know officiating on some level and give games based on who they like (Many are State Final or college officials). And in many cases they could give a darn what a coach thinks and will still use officials on their staff. Also there are these things called Holiday Tournaments and Post season that even if a coach does not like you, there is not "scratch" list and you will get the very same coach that tried to ban you in conference play. It works out quite well and coaches have absolutely no say in where I work or do not work. Heck they certainly cannot control who you see in a non-conference game at all, so it is not unusual to see a coach on the road.
Peace