If we're going to the First, and a good chunk (if not potentially every expansion zone) take place in the First, I really hope that the lore opens up who can travel back and forth. It would really suck if only the WOL and Scions are able to cross worlds and the First is largely inaccessible to travel to for RP. It would also be interesting to have the possibility of RP characters born on the First coming to Eorzea.