I rate this "S"!
For "sexy". >.> <.< Sexy Navi. ARGH! DON'T HURT ME! -Has the shit beaten out of him by Navi- x-x
ow...okay. Kick-ass movie, just like its predecessor. Keep making more. A few issues I have, but even if they aren't solved the series will stay great.
First, the voices. You've probably reached the limits of what regular technology can give, you'd likely need expensive stuff to refine the voices any further. However, that doesn't change the fact that the voices, while done B-E-A-UTIFULLY, are a bit...fuzzy. Sometimes hard to make out. Still, they are very, very good.
Second, the subtitles. I realize the issue here is probably that your VAs are taking creative liberties with your script, and by the time you record the voices the movie is already animated. The subtitles aren't even really a bit complaint, but they ARE a bit misleading sometimes.
Third, the mouths. You've got body motions down really well, the characters look pretty natural. But the lipsync is a bit off. Again, not a major concern.
Overall, kickass job. Keep it up. -Limps off to nurse fairy-induced wounds-