While I'm not thrilled about the idea of losing Noct shields, what could be cool is if they simply change how stances function. Perhaps Diurnal could be our primary healing stance, while Nocturnal might provide higher damage potencies or extra DPS abilities, but with reduced healing potencies and/or fewer healing options? That would at least give us a choice in how we play the job without sacrificing the sects for lore purposes. Or maybe cards could function differently depending on which sect we are in?