Come on, that would be pretty cool! Instead of just the English or Japanese settings, though Japanese is a wonderful language. Mitsurugi, Taki, Maxi, and Natsu are already set! Haha. Ignoring the language barriers, I'd just love to hear Sophitia or Pyrrha speaking Greek.
Leixia and Xiba as well as their preceders would speak Mandarin... though I'd like to say they'd speak Cantonese (Which I personally find more appealing), Cantonese is only spoken in Hong Kong or Macau. All of the Chinese characters so far have been born within the Mainland.
I feel Siegfried would sound kickass speaking German. What are your thoughts? :)
By the way, Miss me?