It's cool that the German NPCs speak German and the French speak French. Why don't the folks in Kusari space speak Japanese and the Outcasts (and/or the Corsairs) speak Spanish? You could also have NPCs in coalition space speak Russian or Chinese.
As far as I am aware, there was no Japanese Localization for Freelancer. Have no Idea why. As for spanish, I'm not certain. Could be due to what Exo said, subpar voice acting not really working with the RP environment we're going for.
I've abandoned Disco for greener pastures. I'm not going to stick around where I feel unwelcome.