While this idea has merit, it can't work because Job aren't independent of the class they are based on. People keep forgetting that Jobs are equipped, not changed to. This means that the stats aren't allocated to the Jobs, they are allocated to the class. You could go all the way to level 50 without touching a Job and the stat allocation wouldn't change because of it. To make stat allocation only affect Jobs would require the Jobs to work like XI's in that you'd need to completely remove the class system of XIV.