Complaining about third parties is about as pointless as people complaining about campers on a game such as BF5 when there are objectives to defend. Its the nature of the game, last man standing. There's no benefit to be had from letting teams fight, gear up and heal before you move in out of some misplaced act of chivalry. They wouldn't extend you the same courtesy.
They could maybe tone down the range of gunshot sounds, but I can't really see the problem; you just need to have eyes up your backside at all times in this game.
For me third partying is part of the game and should never be removed. I just love having that rush that after you finish a squad you need to immediately either heal or shield swap when you hear the third party coming your way.
I think this is a necro thread from February. All there is to say about it is:
Arenas
The end.
