Player moderators are a horrible idea. It only leads to kids/adults getting a superiority complex and banning/muting people who make the slightest remark of "disrespect." If you want to be a GM, build a resume and submit it to SE like everyone else had to do for a customer service job. Playing a game for 30-40 hours and saying you're good at A, B, and C is not how you get a job or position for anything, sadly.