Yeah, I love the way things like that are hinted in FF. But seriously though, Sephiroth and Tidus!? I can just imagine a meeting between the two now.

Tidus:Hey! I'm your ancestor! Isn't that so *kewl* and-
Sephiroth:You all done now?
Tidus:Huh?
*Sephiroth decapitates Tidus*

Now that is something I'd pay good money to watch