Maybe. I'd have to see who the rest of the cast is so they can make up for this shitty acting Zac Efron does. Morgan Freeman's a good start, but they're going to need more.
You think I'm flaming or joking, but I'm not, not either. Or flame baiting. Zac Efron sucks as an actor, I saw 17 again, Charlie St. Cloud, when we had High School Musical 3 (i work at a movie theatre, I see EVERY movie that it gets the day we get it, whihc is the week before we release it to the public). And Zac Efron has the dramatic acting capabilities of a line (he's one dimensional for those who dont get it).
So the movie is going to result in the rest of the cast. If the rest of the cast are good, and they stay somehwat faithful (whihc they probably could, since there are enough anime fans here where it would make a decent enough profit from that demographic), then the movie will be oka, as long as it doesnt rely on Zac Efron to carry the main bulk of the emotion. If the rest of the cast suck, or they arent that faithful, it wont be that great.