I know language is complicated, but cant they just make it enable in "chat" for different language but keep the menu/mods english? And let us copy the letter so that can easily translate.
In region chat i never encounter other foreign language but once in-game, its easy to find them.
Nvm, maybe its a bad idea when trading to avoid confusion. But damn, its just good for in-game mission u know. But damn would mess the trade communication.