Win traders doesn't affect your gameplay in any way. Why what others do in their free time bothers you so much? There is absolutely none people playing PvP, that queues take HOURS to pop unless you group up with a really low rank. Where is that competitive scene you are talking about, are we really playing the same game?

You should make a thread asking SE to actually fix it so more people pvp. Instead you ask to ban 20 ppl that are there for whatever reasons, glamour or boredom, don't care. Would that solve anything? If it's personal satisfaction i sincerely advice you to grow up.