I very much want to add pictures for men too, but my current plan is to add them at the same time as dateable male NPCs. Good idea with the option to disable them, I'll include that as a new game setting.
I'm strongly considering expanding the system to show the full bodies of girls in the update after next (the sex update). It would show their gain pattern, size (for every weight stage), belly shape, cellulite & stretch marks, all completely naked (creating a range of different clothes that would fit all these body shapes would be too much work, at least initially). I'm thinking that perhaps you could see this image as part of the new sex scenes, then once viewed, it would appear in a gallery for before/after comparisons available via the girl's contact in your phone.