I noted that the girl in the lead role is able to fight the strongest men but still fits the delicate, feminine ideal and does need a lot of rescuing. A little bit of a mixed message to our girls - they can be tough and fight like boys but the ideal of feminine beauty remains constant. One would imagine, a girl in a non-traditional role, that of a fierce and fearless fighter may actually look the part. And that she would be able to fend for herself in crisis.
This Slate article takes a crack at explaining why dystopia is so popular with youth.