Have just realised the potential of rendering with MOI while reading this thread. While experimenting with the script I thought that it would be useful if we could also:
1 - Hide grid only in the rendering
2 - Hide hidden lines only in the rendering
3 - Change the background color only in the rendering(I'm thinking to black or green to use as an alpha channel)
4 - Enable 'constant' shading only in the rendering(that is, without shadowing) - this has the side effect of allowing accurate bitmap to vector conversion.
5 - Increase meshing resolution only in rendering
Thanks,

Ambimind