I've gotten my best results at realistic cloning simply by tweaking the DAZ morphs in Poser.

In that case, the Facegen customizer may be of use to you, at least if digital cloning is what you're going for. IME, the big drawback to dial-spun likenesses is the textures aren't right. Without the right texture, you'll never get a good likeness.

I don't think you need to submit images or animations to the Facegen servers. I think you do if you want to redistribute the mesh. They don't charge per character, but per software package. So if you want to use Facegen faces in your game, it's $1,000, no matter how many characters you have. Sequels are included, but a new game would require another license.