I really wish there was a voice chat feature for parties. I'm sick of so many parties dying to people not knowing mechanics, and not being able to explain things in the middle of fights because you're too busy playing with your keyboard to type.

I don't care if people have social anxiety and would rather die than actually speak to another human. Voice chat is a necessity for the fast fights, alerting people to emergent situations and helping to organise in general. Why isn't it a feature for instances?

You could always include a mute option for people who just hate to talk to others. Language barriers aren't a worry either, because I'm pretty sure every player, aside from on JP servers, speaks English.