Did you try out MakeHuman already? Don't say you didn't!
There are some (dunno how they're called?) MH 'Plugins' or 'Export Morphs'(?) to get models converted and out from MH to Blender or DAZ, maybe to some other 3D sw (Maya?) too. Or to Blender,
then from there to where ever you need via export.
Two ways essentially, sometimes the indirect one is better I guess, because with Blender you've got powerfull functions to tweak and tune your stuff. MH has best support for Blender I read, because both are Open Source. So there are more ppl working on connecting import / export for assets (plus both rely on Python, if I'm not mistaken).
Edit: about textures. Maybe it's just me, but I think a 'perfect' testure is creepy sometimes. You know, flawless skin, no scars - all that. And if you use clothing, most of the skin texture is hidden anyway.