No one knows what a GM can do for the server until they are given the chance. Yes we have had some staff who have power abused and/or ignored their responsibilities, but they were removed. People can change when given power, no matter how they act beforehand.
A perfect example would be Stroop. He stated that he had no experience being a GM before he was hired. Now? Hiring Stroop was one of the best decisions the staff has ever made. He is the best GM FGunZ has ever had.