From EE dump it looks like code for loading that is coming directly from game, so for sure this can be at least patched ingame to load from mc0: instead of rom2: . Not sure that FNTHANCH (that's loaded first) and GB18030 can be replaced by other files, but for sure can be forced to load from different location. But to be honest is not worth patching per game, better will be include something like that for all (19?) SCCS games, in form of FMCB, or at least homebrew/OPL hook. This seems to not be really hard to do.
Sadly i can't help here more than i already did. For sure doable, but we need some magican from ps2 scene to implement it.
I can confirm that at least Ape Escape 2 rely on those fonts, not only in term of loading, but also really use them. I'm not familiar enough with BIG5, or GB18030 to tell they are replaceable by each self. Probably it will load, but use wrong characters.
Sadly i can't help here more than i already did. For sure doable, but we need some magican from ps2 scene to implement it.
I can confirm that at least Ape Escape 2 rely on those fonts, not only in term of loading, but also really use them. I'm not familiar enough with BIG5, or GB18030 to tell they are replaceable by each self. Probably it will load, but use wrong characters.