Lineworks 1.0, a new Blender helper at $20.
“quickly add rigged line strips and grease pencil lines to your characters. The lines will follow the surface of your character [and each has] a rig that gives you control over the lines”.
Something along those lines (ouch) would enhance the Comic Book mode for Poser 12, I’m thinking. One could of course make a character MAT on which you’ve hand-inked along the seams and suchlike, but that wouldn’t enable quick turning on/off of lines, or things like wiggling toon eyebrows.