Yeah the option to cancel attacks is gonna be essential, cause I've also ran into a bunch of cases where I regretted choosing an attack. At least it'll only be 2 lines at most. Balancing in general has been complicated for me cause I don't know what direction to go to, I never thought of AP though and that seems like it would be a cool mechanic. Would probably give more reason to select move instead of spin, if you could attack again after pressing move. Another one i've been thinking of would be to make you lose health when you use skills, like a replacement for not having MP in the game, but as of now I wasn't considering adding items either so it would be tough to survive unless I boost the heal, but then heal would also be OP.