TonyDPrime
Midix, I see the references to StyleGan you make, but I don't see any consumer ready products currently at market that employ this.
But, even if there were a StyleGan-program, all it would do is generate faces, from other faces. Which is cool, but this would not really need to be a part of Headshot.
animagic
From what I gather, all StyleGan does is create artificial portraits, not 3D models of faces.
Yes, you are both right, StyleGan is not a product, it's just an algorithm. However, I have seen some GitHub open-source StyleGan-based project examples that attempt to work with specific facial features to control the generation. It is far from production-ready, those are just experimental proof-of-concepts; but still it's something that has a potential to work with abstract facial features on any reference photos (or even drawings - I have seen GANs trained on anime) to avoid using photos themselves as textures.
And, of course, I'm not talking about 3D model generation but about feature extraction from a (possibly low quality) photo and then applying those features to a HD face texture preset. To be very specific - using StyleGan (or similar) trained neural network that knows how to extract, let's say, eyebrow shape and color from a low res photo and then apply (generate, as we speak in GAN terms) the approximated eyebrow shape and color but in high-definition. Because the generator part of GAN would be trained on HD skin textures, it would know how to generate high quality facial features, even when given low quality input data. It's essentially about 4K HD texture feature generation to match a low-res photo reference input. The same work as a ZBrush sculptor does when given a ref image and manually painting onto the 3D model to create the texture.
Of course, such level of AI-complexity might require lots of work and science, so I'm not sure when we'll see a complete product capable of that. But that's what I would expect from a perfect "reference photo (or even a drawing) to realistic HD facial texture" tool.