Is the game moddable? I could see that being a fairly easy to implement solution
Yeah, it seems that the other voices for each different language are included, so it shouldn't be too hard to mod those into the game. It's mad hearing Japanese, Scottish and German guys all speaking with American-accented English.
*I noticed that Scotland seems to be an independent nation in the game, as its flag is in separate from the UK flag. Someone clearly predicting the result of the independence referendum in 2014 :)