Goddamn it Hollywood, you just don't get it. I think Morgan Freeman is a legend, but I still say this is a terrible choice. Zac Efron too, and not simply because he was the douchebag in High School Musical. Pay attention, Hollywood, I'm going to say something important:
Akira is a Japanese story. About Japanese characters. Living in a cyberpunk, sci-fi-esque, but most importantly, a Japanese society and culture. That's the reason the Colonel exists in the film in the first place. He's an old-school Japanese soldier who believes in honour and duty: not just in a wishy-washy way either, but in a hard-as-nails righteous samurai kind of way. And he's railing against the decadence and hedonism which has taken over society- a hedonism strongly reminiscent of Western lifestyles, in fact.
Setting Akira anywhere outside Japan isn't just mis-guided, it's actualy downright insulting. A story isn't just a sequence of random events. It's informed by the setting and the context within which the events take place. All Hollywood are proving is that they think they can take a rectangular block (a pretty mind-boggling, brilliantly animated rectangular block) and shove it in a circular hole labelled "Neo-Manhatten". If you shove that rectangular block hard enough, maybe you'll get it through the hole, but you're sure going to lose a lot of that block's edge.