We wouldn't have died though, XIV already established that the future can not be changed via Shadow Bringers Tales sharing that Graha future did not cease to exist & the Black Rose time line still exist despite our changing of history. The Timeline that the sundering happened in happen Venat could've shared the info of Meteon in the loop time line & they could've devised a way to Meteon & we still would've dealt with her in our time line, thus both times could've been saved Emet Laha Eli etc would not cease to exist in our realm despite change to past all that happened to that point in our time line would still have happened.