Would love to have any information(in depth that is) you can share further on Mhach. For example the leadership structure, its most renowned figures, social structure... the list goes on. From what little we know of them they clearly, to me at least, have potentially the most interesting lore to follow. I also have a vested interest in whether or not Black Mages will ever have to revisit Mhachi history or the ruins of Mhach in the future for respective Job quests. So many ways to use this.