Well, I think it could come across as kind of skeevy to be able to select specifically different boob sizes for female bodies if that weren't part of a comprehensive customisation system that let us adjust various body dimensions for all genders. Talking about it specifically in the context of making bigger-boobed characters possible is one way to make it sound a bit creepy, at least unless it's a request from big-boobed women for representation for themselves. If adjustment in both directions from what seems a reasonable average for a body type is what we're talking about, it could be done well, I guess. Especially if the options were kept within reasonable norms, and in general I'm in favour of options that allow us to represent more diverse characters. But this is one where I'd rather it wasn't done at all than done badly.
