Originally Posted by
Raikai
Exactly, you're probably the most known person in Eorzea and surroundings if you stack the reputation the WoL has been building up ever since ARR. I would think it would be kind of unrealistic to think that such a reputation would not spread even to some degree into the New World or Meracydia (if there's even something there to begin with).
The best way to weave in a whole new story arc is to explore another shard, especially because the Scions can't really travel through them at will, so you would have to get to know a new cast of characters. I totally trust the writers into delivering good stuff in that regard. Or heck, I wouldn't even mind if Gaia would be one of those - they would have to make Eden series completion mandatory, but hey they did that with Crystal tower anyways.
And still, this would make the unexplored areas from the Source into side content, and even having the Scions to be featured there, since they are no longer officially franchised.