Oh yes, the Paradigm System is overkill!...
I doubt it would break everyone's jobs because it's limited to like six slots and each slot can be one job so six jobs total to choose from in the middle of combat, the possibilities are immense!...
I agree it's on another level of gaming but it doesn't mean you have to level up all jobs, just the six you want to use, the game would become insanely fun!...