I suspect that booth babes won't be needed as much in the future as more women get into game development.
Player: "Hey where's that blond in a wonder bra you had last year?"
Dev: "We don't need her anymore."
[Points to the fully clothed Brunette on stage in front of the army of drooling pez dispensers]
Dev: "She enjoys making them feel insignificant."
Booth babes will be less effective as the population of women players increases too.