Hi, sorry for bumping this thread from 2 years ago but the topic interests me. I'm both a VGM Arranger and a huge Kingdom Hearts fan (I feel in love with KH1 back in 2003 and been a fan since). While I don't have any experience with others playing my music, I feel I could provide something to this album idea (I have a unique style to my music with an emphasis on melody and write in Musescore).
How much progress do you have on other themes besides Roxas? I could maybe provide an arrangement for Riku (maybe something representing his character growth and having decent energy), Xehanort (I've always wanted to do a theme for him), Saix/Isa (I think it would primarily incorporate "Sacred Moon"), the other villains (that could be fun), and/or Ventus.