So, it's time to make a choice on how I handle the Main Character's images. This isn't an issue if the MC is male, since porn images almost always focus on the woman. The options are, in more detail:
Use pictures from a random girl each time. So sometimes the image accmpanying the player giving a blowjob would be of Wend, sometimes of Antinua. The advantage is that this is super easy. The downside is a lack of consistency.
Have player choose a girl whose pictures get used (at the same time as they choose their name). This is what I'm leaning towards, currently. The downside here, shared with the first option, is that when you've hired the girl, you'll start seeing that image set a whole lot.
Create separate image set (PC has set physical description). That is, I'll decide what the player's character looks like, and match images to that description. The downside here is a lack of choice - you have to ignore the images to think of yourself as anything other than a cute freckled young brunette.
Separate image set with face hidden. I can try to find images where the girl's face is hidden. This is a variant of the above.
Options three and four take work! Finding and modifying the full image set is the majority of work that goes into creating a character. So if I go with 3/4, there will be one fewer hireable girls. That's why I'm leaning towards #2 at the moment.
Please mention any alternatives I've missed. :)