It would be nice if the FATES prior to SHB were more rewarding, or at least the difficult and/or longer weird ones like The Magitek is Back, in the Peaks. It has no achievement and is the only Chase FATE in the game as far as I know yet gives nothing other than the regular FATE rewards. That's the most prominent one that comes to mind, though I know there are quite a few FATES in HW that take quite longer than ARR FATES due to kill credit for some reason not counting as much.