I honestly don't see it going that far. I've seen other similar anime get positive results without becoming that important in the long run and Attack on Titan doesn't feel that important honestly. It won't redefine anime as a whole since it doesn't have anything THAT important going on in it and it's not that extreme as a whole. I'm not saying it's bad...just that it doesn't feel as big as it should be. And most of the reason why it's gathering such praise at the moment is due mostly to the art style rather than characters - Eren is far from a Shinji or a Goku or a Light or even a Guts - or story - 10 episodes and the story feels very much similar to Starship Troopers in a way -.
Again, it's far from a bad anime, there are a lot of those. Just that I don't believe in the long run that it will become as memorable as people think it will.
