Oh, for God's sake. I played without teacher or theory practice, is this what all my hard work has come down to? Well, fine, if the "competition" comes, bring it on. *plays Mr. Crowley solo*
Also, the flaws: The strings will sound like a real guitar which distracts, those that won't pick up the real thing is going to give up by all the practice it takes, and there won't be a sequel, because anyone who's mastered the game will then have gone out and started a band. Seriously, just get a real guitar. Don't get me wrong, Guitar Hero is really fun, I just wish it had more Dragonforce songs, but this is just outright silly.
Also, they want to "revive" the genre, but this looks like it might actually hurt it.