Serapy, I like how you post something, but never answer any question towards it that isn't easily explained. Before I pointed out a thing called Symbolism. I think the reason that he had the flashback with Rinoa turning into Ultimecia because of the feeling he had in the past when he felt as if he was losing her. Its pretty easy to draw out.

Next. It does mater if Ulti has possessed Edea at the time. Because your "FFVIII is a time compressed world straight from the beginning." Is a theory. If you know anything about science you'd know that the most illogical, and unlikely theories, are ones based off other ones.

Next. You also appear to disregard any knowledge of Writing. FFVIII was a love story between Rinoa and Squall, because the main theme was love. Ultimecia is there to spice up the story, and give it something that will actually make it interactive.

I like how you bring up "pure" evidence. There is no pure evidence that R=U, there is no "pure" evidence on any of your facts. I'm sorry but if you want to argue about pure evidence, you better have some of your own.