Any mods for FF4 psp?

If this thread isn't too old to reply to, I've seen discussions of hacking FF4 PSP on the romhacking.net forums. I'd love it if someone came up with a hacking utility for FF4/The After Years, because I have several ideas for character modding in TAY. (Specifically, I'd like to make it so there are no useless characters, since one of the big problems with TAY is the amount of characters who are basically useless endgame, or have useless commands.) Knowing C is probably useful if you want to hack PSP games in general, since from what I've read, most of them were written in C or C++.