The fact was, in a battle situation voice chat gave you a distinct advantage over text commands/orders and so died a little RP and immersion when it was embraced that day. It is why solo play is that much more immersive, you don't have characters popping up who aren't of yours or similar mindset.
On the topic of voice chat, I recently played PS2(Planetside 2) over the past year where voice chat is absolutely essential to the success of the platoon(s). There was a massive amount of immersion to be had by the chatter in PS2 and by the very nature of the game and what kinds of communication or chatter went on over comms, from giving a move order for alpha and bravo to take point while charlie is to scout the perimeter of a facility. Mind you, in our platoons, other than acting commanders, we had strict clear comms with the exception of spotting or locating priority targets.
What I'm saying is, this immersion from voice chat actually brought about RP in a way which is something I totally did not expect to happen, especially coming from mmo's.
I'm playing a "game" that I'm a starship commander/pilot, I have no interest to be pulled out of that immersion by anyone. The fact that some seek to do that means (for me) they are instantly placed on my block or banned list and if it gets to the point where it is no longer controllable ... well ... I'll just have to go solo play and leave it at that. A selfish way of playing? Maybe.
Multiplayer is something I want to try and am very enthusiastic about. I think voice comms could work very well for ship to ship communication but I am unsure if it will have that same immersive sense that I got from PS2 but I am also prepared that I may have to withdraw from the online component from time to time (I'm assuming we can go on and offline at will?) just to enjoy or immerse myself in the game as I don't want to read text or hear voice comms that could potentially egress me from where I want to be. I just hope the ignore list doesn't have some silly cap.