Missing subtitles? I was planning on using the Japanese voices, so what's the issue here? (I'm mostly in the dark, so I'm asking out of genuine ignorance).
Cutscenes? Battle text? I don't care about the latter but the former having no subtitles would be annoying and sort of defeat dual audio for a portion of the game.
Cutscenes, battle text, random chatter you name it. Mostly of background characters, but there's been a few times it was the only characters on the screen talking and no text.