Didn't mean to confuse -- I'm familiar with the event system, and have had no problem using them in my toying around w/ XP.
I'm referring specifically to scripting.
As far as the system I have in mind, it's a fairly straight-forward system -- uses HP, MP as standard RPGs, but I've also included an Energy stat. The idea is that Energy is fully replenished after every fight, and that nearly all abilities require some Energy expenditure.
Energy is a static stat based on class. You cannot raise or lower maximum Energy in any way.
(I was trying to think of some way to allow players to use powerful abilities during regular fights while still "saving up" for expected boss fights, and this seemed like a decent way of doing it.)
My system also had a fifth ability stat; I was wondering if inclusion of extra stats was possible. (If not, I'll live; I'll just rearrange what different stats did.)
Finally, I was just going to use my own equations for Hit rates, etc; I was hoping to have a lower-number game, and the core system for the RM series seems to favor a more Final Fantasy-ish level of numbers.