I have an idea about textures. Since a lot (but not all) of PSP2 uses lower quality versions of the assets from PSU, would it be possible to use those instead? I don't know how much new stuff PSP2I adds, I'm sorta waiting for this translation to be done before trying it :P
I just signed up to say, I will be very happy when this is finished. I don't know if I have any useful skills to help, but I am willing, I have a lot of free time right now.
Either way, good work so far, I'm looking forward to the release!