That sounds like a player issue and not a design issue to me.
You really cant expect SE just to change the way they design content to accomodate the player base acting like that towards each other.
Also i havent heard or seen any of this kind of thing in EU.
Japan doesnt seem to have these issues either.
NA players are just going to have to learn to get on with each other.If the rest of the world can do it im sure you guys can too.