Sora is the main character of KH. Obviously if it has something to do with him, more precisely his Nobody, Roxas, you know he's going to get a special place in the story. (Just like Kairi is Sora's special girl, Naminé gets the same treatment of screentime) Yeah it was boring for the whole 6 days, but is better this way then explaining it in exposition as we go through the game (Though it might have added more mystery). The beginning was a way to explain everything in a nutshell, and to get to know Roxas' character, which we did, and for some, he's they're favorite character. I know he's not hateable.
I think another important theme of the game, that played a part on the beginning, was to show us what Nobodies are like, how they "feel", how they get affected, how they are shunned just cause of the simple fact that "they aren't meant to exist". This is present through Roxas' point of view, and to an extent, Naminé. Most people felt sad at the end of Roxas' part, and I think that is what Nomura was trying to reach. Nobodies are kind of pitiful, all they want is a heart, but try to do it they're own way, even if it's wrong. Even I kind of felt bad for Xemnas at the end of it all, and for a moment, Sora kind of did too, before he cheered with the others after he's gone. x_x
Sure, Roxas' tuorial may not have been so important, but it played out a point. It wasn't that bad. But like everyone here I was waiting for Sora's part and to kick some Heartless/Nobody ass with combos and abilities, and get to try those drive forms. To see Riku. Have myself a few laughs at the trio's stupidity, Sora "tickling" Tron
, etc. And I'm happy Sora can skateboard too, I enjoyed that mini-game.
I actually wished that Sora/Roxas bonded a bit more, other than that battle, which I still don't quite get why Roxas challenged in the first place, there could many reasons. I would have liked to see them talk about
something, other than Roxas talking to Naminé half the time. I wanted Sora to actually notice, "Hey, you're that blonde dude that I fought in my mind!" Or make a connection of that sort. But whatever. The thing I know is that they share a dislike for computers and love hurting them, more Sora though.
*Roxas rages and trashes machine with the Keyblade*
First time.
Sora: This is it! Where's Kairi? Where's Riku?
*Starts pressing buttons, gently first, then harder*
Leon: Easy... You wanna break it?
Second time.
Sora *searching*
: Kairi. Riku
Computer: The data is corrupt.
Goofy: Organization.
Computer: The data is corrupt.
Sora: Stupid computer!
*Slam the keys and the windows on the screen jump around wildly until a pic of Diz appeared and he stops*
Sora: Who's this guy?
......*_*