Well, I've almost beaten X-2, but nothing is cleared up at this point. I have a theory about shuyin being the "real" tidus, i.e. the one that actually lived in zanarkand 1000 years ago, and that "tidus" was just the faith's dream-world interpreatation of that person... but that could be totally off.

The faith were'nt ALL killed by Tidus and company though... were they? Isn't the faith just the collective conciousnes of the afterlife? Anyway, I did watch the very end part with Tidus you spoke of, and I took it to mean he was alive... "reborn" somehow... but meh, I got not clue.