1, Which could be said about every comic book movie, when you think about it. It's just that the acceptance rate goes higher or lower based on how much you liked the movie.
2, [blackout]If you think he wasn't wasted you really didn't get the point of the plot twist. Killian is and was the Mandarin. He features the character's core traits and even had powers, for God's sake. Trevor was just a decoy, a metaphor about today's "evil", and at the same time a satiric view on the racist elements of the original Mandarin. This way he didn't have to leave out the racist stereotype Mandarin, but included the different incarnations of the character. One part as his face, the decoy, and the other as his soul, Killian. And considering how Trevor acted according to Killian's "script," even the stereotype was an extension of his mind and character, and therefore he's the Mandarin to every extent. But I guess people don't like to think. You can like it or not, but the character wasn't wasted or ruined. Guy Pearce's Mandarin is basically the version which has been featured lately in the comics. Except not asian, which Ben Kingsley wouldn't have been ANYWAY![/blackout]