Regarding the voice of the game member group, can we separate the voice of the member group in the tank from the language in the game? For example, English is used in the game, but I want my member group to use German, so that the member group is independent of the internal text language in the game,
The default setting already does that, unless you play arcade which uses the same language as the game itself. In realistic and simulator crew speak the language of their vehicle’s nationality regardless of game’s language but you can change it in Options > Sound > Crew language.