Players should have a radio of sorts mounted onto their character's vest, this should act as a "team voice chat" button, this radio could also work as a solution to push to talk. when the player moves their hand across to the radio, their hand should "lock" onto it via an animation, should the player press the trigger button they will then hear a radio beep & will now have their voice transmitted to all players in the same team, radio voice filter is optional but would add a whole new layer of audio immersion, should the player press the grip button instead, this should act as an optional "push-to-talk" button (an alternative for players who want to speak, but dont want to use open mic (myself included) or just a bindable push to talk button as well (not sure how this would work with current control configs though)