Ok so yeah, I can't get into this without touching on spoilers, but I doubt I'm the only one, relatively new as I may be, to see that the only thing that gets as much work put into it as the current lore, are hints at past lore in FFXIV.
There have been 7 eras of lost civilizations and fallen kingdoms, hinted at in so many ARR dungeons and Shadowbringers worldbuilding of the first. While this can be waved away as "it's just the world building that you need to do for a world this deep," there are multiple iterations of time travel opportunities in the game now, and other worlds that do this kind of world building have either done it with prior games or put in time travel to see these moments in dungeons. The Crystal Exarch himself could end up being the "Dr Who of the FFXIV universe," with the WoL as his faithful companion! And let's not forget that while Yoshi-P basically said "do all the 8-person raids, they're relevant," Alexander being specifically named puts time travel on the table.
I don't know, maybe I'm just hyper aware of this angle right now because I'm touring all the non-mandatory dungeon content in ARR, and so many of these things reference a past that deserves to be front and center, and at the same time, I can't think we're just going to start over on another planet with 7.0: We should still be rooted on "this star," and the greatest stories to tell here now are the ones that have been told, just not before our eyes.
Oh yeah, and Sharlayan are pretty sure that "if the end was here, we'd know." They're totally timetravel aware! And who says the Isle of Val isn't so much gone as it is time-shifted or something?
And don't get me started on the first! Literally every zone is "built on the bones" of older civilizations!
I'm new-ish to FFXIV lore, but everything I'm seeing is painting pictures of a history that begs to be explored! Maybe the double entendre of "endwalker" is that we go forth into places that have ended to solve the end that faces Eorzea in the present, and we are zapped out right before the actual apocalypse to learn from the lessons of eras past, and their rises and falls!