Thing is, not just in FFXIV, but any game with this kind of vertical progression... there's only so much you can add across expansions before having to rework stuff, especially on XIV where the combat design is so 'on-leashes'.
Unless they fundamentally change stuff like the 2min meta, damage profile or even improve server responsivity, we may see in the future even jobs deemed 'perfect' like BLM, due to a rework to add new things, because it's unrealistic to expect an expansion that adds absolutely nothing other than just trait upgrades.