well.... i'm finding a lot of inspiration from Monty Oum's Dead Fantasy, which are videos freely made of some Dead of Alive characters vs some Final Fantasy and Kairi from Kingdom Hearts 2 characters.
these videos are featured on GameTrailers.com, search for Monty Oum and you'll find the videos

so with this inspiration i'm drawing some fanart of the characters plus a few more i want to add in.. plus some little comedic ones if i can pull it off

so on the list are:
Final Fantasy/Kingdom Hearts 2;
Rinoa
Tifa
Rikku
Yuna
Cloud
Kairi

Dead or Alive/Ninja Gaiden;
Kasumi
Clones
Ayane
Kitomi
Ryu Hayabusa
Rachel
Hayate
Momiji

Characters i'll add (some are maybe):
Yuffie
Lightning
Zell
Vincent
Sora
Squall

Helena
Jan Lee
Lei Fang
Koroko
Christie

A LOT OF WORK!!! gahhhhh will be worth it