So I've been replaying the Wind Waker, and since it's my favorite Zelda plot and gameplaywise for a myriad of reasons, I would up thinking of how a post apocalypse world could work in FE. Not necessarily a cheerful one with a dark secret like The Wind Waker's peaceful islands, but still.
The first thing that pops to mind is Tellius, of course. Its backstory involves a goddess throwing a temper tantrum and flooding everything but Tellius. However, this wasn't really used as a major plot device until the end of FE10, prior to that, it was "oh yeah this is the only continent in existence". I think it had a lot of potential, but ultimately wasn't fully utilized as well as it could have been.
So, thoughts? Would you like a post-apocalypse story? If so, how would you prefer it to be handled?