Will: Speculations?

Here you can write down your ideas about Will.

My first thought:

What do you think has happened during Final Fantasy X-2 and Will when the Shoopufs, of which at least some existed, were dead except one?

My second thought:

What do you think the story about [Sin] means? Now that he is resummoned one might ask who did it, why and how to be able to defeat him for good.

My third thought:

Why did a Seymour-based theme play when they were at the Moonflow, fitting for the arrival of [Sin]? Does that mean Seymour is back, probably one with [Sin] now as he had his final moment inside of it?

My fourth thought:

What could have happened that Tidus and Yuna have that much problems now (please don't mention that unexplained rumors and stuff that people brought up)?

Tidus always eats with his feet. Always :(