If voicechat does get implemented
I hope it's in a chatroom style where it is obvious to everyone who withdraws from it. If it's on a per-person mute system like game chat, things are going to get confusing as shit with people blindly talking over each other. Also, if you don't know who has you muted or who just doesn't have a mic plugged in, people are going to abandon pings and text chat to talk to a grand total of 1 teammate. I know that quite a lot of people will withdraw from voice chat (myself included, I don't want to hear your voice, and I don't feel like talking myself) so it should be clear right off the bat when your entire team is not listening to you.