About Dimension Hopping: We have Dissidia, which alludes to there being a multitude of universes/worlds which are heavily influenced by crystals/aether/mist/lifestream/mako/whatnot. We have Kingdom Hearts, which suggests that there are worlds that have much the same things, but in different ways (YRP being fairies, yet still best friends).
My theory is that the more similar a world is to another, the easier it is for dimension rifts to open between them, either through design or accident (so Shantotto's threat of coming back would probably be credible, while Lightning, by virtue of messing with time-space, is being tossed around without rhyme nor reason). Space and Time seems to often get messed up in Final Fantasy worlds, leading to this sort of thing (even to the lesser extent of Final Fantasy XIII-2 that happened within one world), and also lets dead/undead/dream characters in on the "fun" as well.
With Louisoix sending adventurers forward in time, I think we can regard such crossover events canon to a certain extent. Or at the very least, but impossible.
Come to think of it, except Vana'diel, Ivalice would be pretty close to Hydaelyn by my theory.
My theory is that the more similar a world is to another, the easier it is for dimension rifts to open between them, either through design or accident (so Shantotto's threat of coming back would probably be credible, while Lightning, by virtue of messing with time-space, is being tossed around without rhyme nor reason). Space and Time seems to often get messed up in Final Fantasy worlds, leading to this sort of thing (even to the lesser extent of Final Fantasy XIII-2 that happened within one world), and also lets dead/undead/dream characters in on the "fun" as well.
With Louisoix sending adventurers forward in time, I think we can regard such crossover events canon to a certain extent. Or at the very least, but impossible.
Come to think of it, except Vana'diel, Ivalice would be pretty close to Hydaelyn by my theory.
