If I maybe had some help I would turn my mugen into a homebrew but I'm seeing one major problem since almost every good character has about 5 or more specials and there are 6 attack buttons not i ncluding the arrows how could it be done? While on the other hand it could go like this.
A=A
B=S
X=D
Y=L
L=:
R="
Then the arrows can be used as normal arrows to move jump crouch and do specials. This could actually work but someone tell me how I can start. If I can find out how I will first make it with just non shippuden naruto characters.