I just looked up how to get into the ROM files and NARC, looked around and compared it to the previous BW. They both open up with the same tools fine by the looks of it, might be able to re-use some stuff from the previous games instead of translating.
I may have only just looked around how to do this, but I can help with editing files if need be (can't translate though). Although I've got a bit of work to do for college final submissions this week, so I'll look a bit into that after I'm done. I'll be free all summer wheeeyy.