It's been a while, did you happen to have the time to look into the MT Framework Mobile .tex textures yet? All Capcom 3DS games I've checked so far use it, so there's a good chance you could add support for a bunch of games at once.
(If you want to, I can resend my example files)
Hmm. That would be nice. I will see if I still have them. Otherwise I will let you know.