I agree that is is unlikely to happen, but I would like it if they went back and redubbed and cleaned up some of ARR's CSes and dialogue to fit better with what the game became. As anecdotal evidence, I have had people I've recommended FFXIV to before drop it specifically because of the ARR English dub. And no, "just switch language tracks" or "it gets better in Heavensward" is not a solution.