I'm not following the symbolism accusation, but I never read past Lucy's character in the whole thing. It was pretty entertaining for mindless violence and the chance to see an unrepentant homicidal sociopath in action. In truth they cut a lot of shit out of it that would have likely made it lots better (more backstory on the diclonious, maybe some of the connections involved between her and that cooky orginization). The ending was pretty shit, bar none, but it was interesting, otherwise. Other than flipping the ending, and maybe adding some content (Nyu raep loli or something), it wasn't a bad ride.
Certainly wasn't symbolic, nor did it try to be. Unlike Melody of Oblivion.