They might as well do it. Gold sellers are rampant on private servers just as they were back in the day on retail. I don't see why it would be any different here unless they do more than just ban waves. Some people are going to buy gold one way or another so might as well let them have a safe way to do it that discourages assholes from spamming me constantly. I'll admit this has several downsides but unless they want to pay several employees just to police the servers I feel it's entirely necessary.