I LIVE.
One topic people bring up time and time again is the fear of clutter and 4+ bar snydrone; I myself am guilty of this kind of coding but it's what makes me feel at ease. That being said, one ongoing class project I've taken up recently is the Red Mage you may have noticed since way back in version 1. Well... discussions happened, and what was once an average performing class suddenly became quite the versatile tool:
https://gfycat.com/ImpureClutteredKouprey
Yeah, you saw this right. It is a kind of innate ability I'd like to call Spell Fusion. It takes whatever two spells you currently have rolled (excluding Diara), and combines their effects so to speak. Generally you will get a more powerful spell or something completely new and interesting altogether. I will say it is definitely not canon but I see it as a good twist on the typical dualcasting ability Red Mages feature in their respective game. The example being shown is Falchion, which requires some kind of wind-based spell and a sword buffing spell. This in general, as with any sword-based spell fusion, gives a temporary spellblade kind of powerup to give your physical attacks a good deal more force. The rainbow-colored bar represents your fusion ammo (activated by a custom button currently, this is still experimental), and rerolling (the red bar) spells uses a second button. While this does take inventory clutter out of the picture, it does add more button management so if that seems like a turnoff, please realize it's being looked into.