Had an old timer tell me once...
"When the coaches you loved working games for because they never complained and just coached their kids all get on your a$$ and stay there all year...it's time to think about cutting back on the big games."
Our chapter (Pres and Assignment Sec) gets a lot of feedback from coaches and AD's. I am told that if the complaints start piling up the send evaluators to check them out. They also try, as much as possible, to evaluate a rising star when they are working with the most senior members. Serves a dual purpose of comparing two officials in virtually the same situation and is an opportunity to catch someone who is slipping.