controversial opinion time; the Junctioning system in the game may well make the use of magic mostly detrimental to you, but it's also brilliant, because with a bit of time and patience it is broken as fuck and allows you to use all the coolest attacks in the game with impunity.
Similarly, the combination of the Triple Triad card game, still hands down the best mini game in a Final Fantasy, with the Junction system providing a mechanic to break down materials, especially cards for relevancy, to provide spells, means that you can walk into the endgame and optional super bosses so ridiculously overpowered, that you can wipe the flaw with everything without taking a single point of damage in return.
There's something about an RPG system that seems arse backwards and counter productive on the surface, but that grants you an insane amount of freedom, customisation and power once you put the effort in to understand it, that I just love.