Preferences for a new world in 6.x, 7.x and beyond

[RyuDragnier]

I'm mostly referring to that Endwalker zone that by all appearances is a floating sanctuary of Ancient make; presumably spared from calamities simply by virtue of being too high in the sky to be affected.

I feel like if one such place exists, there could easily be others given the nigh-limitless potential of the Ancients, plus we don't really much of an idea of if/how the other continents in the world were affected by the calamities.

I don't think it's in the sky, tbh. Think about what we know about it. It looks like a dreamworld, a paradise, and somebody known as The Dreamer has been referenced in the final story stuff for 5.5. It's likely an area that's in a dream world created by The Dreamer, similar in concept to Lyhe Mheg (Pixie tribe special area).