Actually, I don't know how VXAce works, but it was just an idea.
In my project I have a luck stat that affects almost anything (hit chance, evasion, drop rate, critical rate, status effects, etc...), but also use Intelligence as a way to make added effects more effective. Intelligence improves magical damage, but also, when a skill causes some kind of status effect, its base probability is depending of user Intelligence versus objective Constitution (and then, that probability is further modified by luck).
This allows to offer more options for your characters. Some will be stronger and will deal more damage, but will have a low chance of inflicting states, while other characters will offer the strategic option of dealing less damage in exchange of a higher chance of inflicting states.