So was I. How is a boy choosing to fight crime and working on it every day the same as a lost twenty-something who gets thrown in jail? That's not depth, that's a new storyline. The only thing Bruce is supposed to be confused about is what type of costume to make, not if he should stay in college, shoot a gangster, run away from Gotham, or why he's in prison. I'm not asking for cut and paste, but those are two entirely different ideas.
Many martial artists train for more than seven years, wouldn't they be better than Batman in Nolan's version?, Add into the idea if any of them studied any schooling on criminals, science, technology, etc. they would know more than Bruce in Nolan's version as well. That's not Batman to me.
You think it greatly added to the story, I think it took something away. I would have much rather seen the main character be better than everyone else in the world by training hard for it, not being lost and then training for only seven years for it. If you don't see the entire thing as being different and radical more power to you, and I may be alone on this, but it doesn't mean I'm wrong either.