I want to say Re:CoM had Reaction Commands...or not. I can't remember.
I think by "reaction commands", he may have meant, like, going into Dark Mode. The sleights for Riku were fun, too. I loved using the Mickey+Soul Eater+Soul Eater combo.
LoL, i just remembered.. Re:CoM did have reaction commands..
sonic blade has it, blitz, strike, ragnarok, arcanum, etc..
only it does not trigger a scene. .just a continuation/additional attack to the sleight..
and yeah.!! the Holy Burst was fun.!!