I'm not sure I even regard this as a developer studios responsibility.
What has the game to do with how it's players behave? Your teebagging example is great for this: You seek a technical solution for a behavioural problem of the player base? That's a bit too far.
I'm pretty sure I know the players you describe. I've played against them, I've played with them and talked to them. I've let them get to me and ragequit. They are clearly cunts and bullies. Not much you can do about them.
Change what is in your control: Play in a good state of mind where this stuff does not get to you (not when you're tired after work). Turn off voice comms. Don't let it get to you. Worst thing you can do to a troll is ignore them.