Those damn Jokers again huh. It seems that they represent a personal affront to your definition of ethics. 
ethics? hardly, poor game play you bet. They spent a lot of time keeping the HQ down and in the end instead of winning the map, which everyone says is the point of the game, their self serving tactics cost their team a win.
When it comes to lame game play like dropping HQ, flying off the map while you grab alt in B29 and such it hurts the game more than helps it. The more negative comments that come out the less likely people are going to try it out. Sure everyone could just shut up and only post nice things and sweep the crap under the rug

but I think fixing the issues to steer players away from lame game play would help a lot more. Then maybe we would be reading more after action reports where everyone had fun instead complaining about poor gamesmanship.