Looks like this tread has ran its course, but I’m going to throw in my 2 cents. With the “female” face, your operator will have small breasts. Like a female in their early teens. It’s hard to tell with some of the cosmetic tops. The thinner tops do show. By switching to the “male” head, the chest becomes flat.
I put the genders in quotations, because this thread demonstrates the male and female features are some what suggestive.
I personally ran a male operator, voice and chest for about a year. I have since switched to a female operator. With corresponding features.