Those are some excellent suggestions. I'll keep them in mind. Unlike the modeling, which has been done completely in Wings3D, the UV mapping will likely require me to switch between different tools. UVLayout is excellent for picking seams, cutting, pasting and flattening, but I'll probably use Wings to make the final layouts, and also for things like eyes and lashes that - if I follow bagginsbill's suggestions - would need precise placement. I might have a look at Blender's UV mapping as well to see what its specific strengths are.

Anyway, here's a picture of my current, preliminary layout.

The individuals charts will of course be rearranged and scaled, but the seams are probably fairly close to what they will look like in the final mapping. I'm trying to find a balance between as few seams and as little distortion as possible. Also, I am of course trying to put the seams where they will be least obvious. I'm not quite sure if I'll be able to do that exact alignment at the legs and arms that we've been talking about, but at least I'm not too far from it.

-- I'm not mad at you, just Westphalian.