Hi. I don’t know if this is feasible or not, but I thought I’d toss it out there just in case.
The other day, I was looking at this blog entry about dynamic mesh tessellation in Blender:
I was wondering if it would be possible to harness this code (or some version thereof) to create a new retopo tool that works automatically and converts low poly meshes into something suitable for high-res sculpting. Here’s how it would work: Start with a small, dynamically tessellated sphere sitting completely inside an object, and “inflate” that sphere like a balloon until it’s pressed up against the inside of the outer mesh on all sides, taking care to slide vertices into seams and corners where possible so as to preserve the sharpness of the mesh.
Does that make sense at all? Essentially, you could use it to convert a low-poly mesh that might not have a good topology for sculpting into a high-poly mesh that does.
Anyway, just a thought. Feel free to poke at it.