I'm cool with the context sensitive "RELOADING!" and other expletives and whatnot during a firefight, but the issue I have is when you are trying to sneak about and your soldier moans about being tired.
Just a comment: if your character's stamina bar is exhausted and he starts gasping for breath and talking about being tired, for one you have been sprinting
so you can't claim to be be "sneaking about". Sprinting is not sneaking, and sneaking is not sprinting. For two, if you want to "sneak about" after sprinting, all you have to do to stop being tired is stop sprinting and stay in one place for a moment. If you are simultaneously trying to sneak and exhaust your stamina bar,
you're doing it wrong.
But overall, I'm mixed about the auto-vocalizations. On one hand I like them and the flavor they add to the game. They are part of the soundscape of RO2 which is one of the better aspects. They really add atmosphere to the firefights and they lend some battlefield awareness too. It helps me know if my teammates are nearby, and also to know to some extent if there are enemies nearby. And also for many situations I don't have to fumble with voice commands to call something out, the game streamlines that for me, which I like because it shouldn't take as long as it takes with any conceivable voice comm system to just blurt something out. I know this is the great thing about VOIP, but honestly sometimes I don't use it because I am playing late at night and my family would not appreciate me waking them up with my RO2 chatter, and also VOIP breaks realism the other way in that only teammates hear you.
On the other hand, I know it only makes sense to be able to suppress the urge to say something in situations when stealth is important. But I feel that to be able to just toggle it off without restrictions is not the answer, because it would quickly become a game where everyone was just silent, which would be a shame, just my opinion. I do feel like there should be a limit to it, however "unrealistic" that is...(to anyone who would say it's untactical or unrealistic to not be able to stay silent for however long you choose, please turn off your VOIP and also log off your clan's vent server, because these are unrealistic ways of handling battlefield communication, too).
For one, if there is a toggle command to stay quiet or perhaps a quite mode for crouchwalking, like others have mentioned certain things should not be able to be turned off. Cries of pain or alarm are for the most part involuntary. Yes, in real life we have an ability to suppress these, but for the most part we wind up blurting stuff out. I think that's realistic enough.
Speaking of suppression, how about just making it so that if there is any suppression in your suppression bar at all, the toggle or quiet mode gets turned off and all vocalizations become active again, reflecting that suppression is a somewhat primal, excited state where there is less superego control of one's exclamations. Even though suppression can come from random nearby or even friendly fire, there's a maybe good chance that you are suppressed because an enemy already knows you are there anyway. Same could go for exhaustion, just for good measure. And then the stamina and suppression bar would have to be replenished, to calm your character down to be able to turn it back to quiet mode. This would be a compromise solution which retains some flavor for the battlefield experience without sacrificing needed situational stealth. Just to make it so that it isn't a "set it and forget it" toggle that allows you to be in stealth mode the entire game.