i think that would be quite hard to do, all the voiceovers of the cutscenes are in english (even in the japanese version which is a point of complaint for some japanese players already)

our character voices on the other hand are provided by japanese voice actors (one of the miqote voices is in fact a reather knowen seiyuu)

that would make it pretty hard to make voiceovers without changing the voices completely for each region, and also ingame it would be problematic, if only because a german/french/japanese player would hear my character with a different voice than chose which might be very bad.

on the other hand if they could lock your voice to your region but that would kinda suck too, imagine 4 gladiators using the same skill and everyone shouts in a different language. (which would make at least me cringe cause i hate the german skill names, thats why i play in enlish)

btw first thing on my mind when i was thinking about the XIII voiceovers lol
http://www.youtube.com/watch?v=P7dOOy8kBJY