In games like Destiny or CS:GO for example, you should not even be allowed to start the activity without a working microphone. I dont care if you are antisocial, if that’s the case, those activaties aren’t for you and you shouldn’t bring down your entire team because of that.
As an clarification, I’m more worried about Raids than PVP
I don’t think that would change much. You can have a thousand working microphones plugged into your computer but if you choose not to talk then it won’t make a difference. Those who want to communicate with voice will make sure they have a mic, and those who don’t want to won’t speak.