Though I very much doubt that anyone particularly cares, and I doubt even more that it would be possible to implement due to there being so many references to Sauromugue Champaign; The translation of Sauromugue Champaign from Japanese means "Sauromugue Wilderness".
This makes much more sense in English, particularly because Champaign is a county in Ohio USA, but other than that it's not a descriptive name for a type of place.
Calling it "Sauromugue Champaign" is a bit like other regions being named "Meriphitaud Himalayers" or "Tahronghi Tsangpo" or "Western Altepa Sahara".