Mods should be REQUIRED to play the game. You should try to talk to mods of games who doesn't play the particular game, they have no idea what you are talking about so trying to report a bug is hell.

That said, they either shouldn't give themselves perks OR they should not play competitively (stay away from sage/masuri, except for testing purposes joining them infrequently and, where possible, forfeit fights)

As for GL, you do realize that GLs are player first right? In fact, GL are generally paid with in game currency. Not letting them play would defeat the purpose. Why would anyone become a GL if they can't play the game like that?