I was also thinking perhaps a series where each episode a girl gets a make over. You'd purposely make her look ugly at the start and have a panel of guys vote on her image, things like tits, lips, waist, face, hair. Also ask her questions about sex and she'll give really geeky answers. After a "pimp my car" style makeover, she comes out looking all barbie-doll. Give her a fake tan, dye the hair platinum blonde, she'd have to be nice and skinny already but that could be covered up at the start and displayed at the end when she just wears a thong and bikini. Of course she'd need fake tits, which is the expensive bit. But it'd be fucking great. Train her to be more of a slut, give sexy answers. The gus vote "fuck or chuck" and of course the barbie gets fucked. Really emphasise that the ugly girl at the start was hated by the guys and the barbie at the end was loved and got an amazing fucking out of it (maybe a gangbang? That's a personal preference but would help to show how fuckable barbie girls are).
I think a porn series like that would really help to convince girls to go for the barbie look, which they so should! Long post, sorry, but any other ideas?