I am aware that not all applicable modifiers perform their operations successfully on curves or curved surfaces in Blender, since not all operations are implemented (curved surfaces in particular).
It would certainly expedite matters if I could:
-Fill between two curves to generate a NURBS surface, with all it’s handles.
-Do a surface respective Knife cut on a NURBS Surface, with the option to separate
parts into two NURBS surface objects.
-Do an object join on two NURBS surfaces, particularly at connection points or
to an edge or just it’s points, either if points and or edges are touching, or
at translation or non-affine transformation.
-Do the boolean operations on two NURBS surfaces, to take away one part
as a NURBS surface.
-Is there anyone who knows anything about the present or futurestate of development on Blender who can comment about these? I would love a reply.