Mage optimization seems rather irritating in this game, at least compared to certain others. I'd want to be able to mash one button and have it equip the ideal wand, merge, etc. for casting Foie and then cast Foie. Even better would be something like Windower for FFXI, where you can tell it "Whenever I cast $SPELL, equip this stuff, then switch back to my default equips after the cast" (e.g. a better damage reduction or resistance shield). As it is, I think the easiest way to even change gear is with the quick menu, and then you still have to cast, if the thing hasn't died already while you were doing that because someone filled it with lasers.
That, and the limited inventory, of course. But if you have all that gear, you probably don't need to pick up much.
If I'm missing some easier way, please tell me! I want to try FOmarl, and not suck at it.