Sometimes the faces become too feminine or with too many soft features but more often than not it looks pretty good. I'm actually late on this, I was going to make a lengthy post about how the real porn developers could use generative algorithms to make art, the programming logic is somewhat simple and understandable while also producing some very impressive results. A quick google search on "generative art portraits" will show what I'm talking about. Libraries like "Processing" and techniques like "flow fields" can make any image look like impressionistic paintings.
Making these techniques common, understandable or even just providing a software that applies these algorithms with ease of use could revolutionize the H-game indie scene because the devs wouldn't need to always depend on standard 3DCG when they don't have a dedicated artist, of course the artwork generated won't be really original since you are just running a porn-shoot image through an algorithm but still, it opens a lot of possibilities and allows even more customization when setting the game mood and tone as you can apply a myriad of different filters that fit each character individually or even background scenery.
