v1.17
I'm not sure whether this is true of Entrenchment, but when ally chat is used in regular multiplayer, players that you only have a cease-fire with are included. This can prove annoying, as cease-fires are often agreed with opponents, or players friendly with opponents, and they can then listen in on your ally chat.
Wouldn't it be an improvement to have ally-only chat limited to players where there is a peace treaty (and not just a trade treaty)?