If there was a world event in game, that destroys all Aetherctye...

[LlenCoram]

So it totally takes teleporting off the table.

We are thrown back into the stone ages of travel. Chocobo... Gobbue..... unicorn...

Would you be ok with that ? Maybe a large world sized community quest to get them up and running again

YAY ?/ NAY ??

Stone ages of travel? So having far bigger maps, having no mounts of any sort, and having teleports cost so much that they weren't worth doing unless it was absolutely necessary? No airships, the ferry was an actual 5 minute boat ride (and showed up in real time, so if you just missed it you were waiting five minutes for one of the two ferries to come back and get you), and don't forget the level 55+ mobs (easily up to level 99, and they weren't even that far from starter areas).

Been there. It was 1.0 before patch 1.18 gave us Chocobos. There's a reason most of us older players have at least one gathering job leveled up. Back then we had skills that increased our run speed if far enough away from a node :P.