For instance, your persona in the game contains your skills, stats, and weaknesses, if you get hit with an attack u r weak to, you get downed, leading to nasty boosts to certain attacks, but you can do it too, in fact, if the party downs all enemies, they go for an all out attack dealing almighty (non-elemental) damage, and personas are based off mythological figures, you can even control Lucifer!
the Persona series uses tons of cool mechanics, yours are genius, and I bet if you looked at persona's, you'd make even more awesome stuff from it, just a suggestion, ps, I am a big fan of yours