I would hate for it to be a prequel, but maybe like the first 2 hours could take place before kingdom hearts. Like a flash back of some sorts. Kinda like the whole Roxas thing in KHII. Only this time when it does the 2 hour thing maybe it will explain the "Keyblade wars" and all that stuff, then carry on into Kingdom Hearts III.
Pacman: The guy who seriously looks like Roxas has REALLY blue eyes like Roxas did. His hair is also shaped ALOT like it to me. Pause the clip at those certain parts maybe then you can see.
As for the $50 for a game you have already beat. I guess the reason i keep defending it is because i dont own either kingdom hearts game. So if this were to come to america i would get to own Kingdom hearts II (with the bounus stuff) and get to play Chain of Memories without having to play the lame GBA version of it.
I can understand where your coming from. Even if i owned KHII and then Final Mix+ came out over here I would feel really silly buying the same game again, but at the same time i would love to fight all those extra bosses. Then again i might just consider renting it because kingdom hearts is a great series its just the games are too easy and short.