There is no time travel in FFX. Tidus did not got go through 1000 years like he thought. Memories of his real life? I'm afraid I don't understand that. He only has one life, and that's the one given to him by the sleeping summoner's making "Dream" Zanarkand. And of course he exists.
FFX's plot is always dogged for being too simple, yet nobody seems to understand it. I thought it was just deep enough while moving from swiftly between interesting parts as the characters grew and the battle system kept me entertained. That's all that I ask from an RPG. *shrug* I know that if someone came to be with a (then) new system and said "Make the first playstation 2 Final Fantasy game" I wouldn't have done better.
Do you all really hate the FFVIII memory thing that much =o! I thought it was kinda neat and tied well into the whole time thing...Like, destiny, you know? It was all their destiny from the start to grow up and travel through time to the showdown.
Maybe I'm just too accepting of plot twists. If Star Ocean 3's whole...thing...doesn't bother me, then I doubt anything a Final Fantasy pulls is gonna.