This is a part of my "Comms" suggestions.
Basically this comm feature would involve players that are dead to have their last words, whoever friend or foe picks up on these last words will get a small bonus of points. And it'll play a 2D/3D replay (with some sort of effect to let it be known its not real-time being said, maybe a cassette tape effect or custom effect player unlocks) of what the player was saying out loud as they were dying.
Their corpse will stay there a bit longer to allow for people to listen to it. Or it could be a physically small dropped cassette tape to represent what happened there.
Example of what a person would say; cassette effect "We were overrun by these bloody rascals! They murdered us all!! AHHH!!-" cuts out like an old war tape.