Okay, I can buy that. It's the assumption that she's just meant to be a female Lex, or is "cursed" to be evil by her genetics, that I find simplistic and obviously wrong. But a morally ambivalent character who's losing her way and needs to be brought back to the side of the angels? Yeah, that's basically what I see here. I don't believe she'll cross fully to Lex-style villainy, cackling maniacally as she guns people down with abandon or launches a device to blow up the city. But she might become the well-intentioned extremist type of antagonist, slipping a bit too far into a moral gray area and doing worse harm than she intended. It seems we agree that the endgame is her redemption and return to the side of the angels, but I think she can't descend too far into villainy if that's to remain feasible. I just don't buy that an actor is "wasted" by playing a complex and flawed figure rather than a straight-up villain. Villains are boring, just giving into their worst impulses. People who resist those impulses and strive to be better are more complex and thus more interesting.