you’re talking about BREPs, which are always a collection of more nurbs surfaces all joined together in an object, but they are still nurbs … don’t confuse yourself with the manipulators of the nurbs of blender that I admit are remained archaic …
already today to get very similar results to BREPs in blender, it would be enough to use the structure of subsurf with rigid border edges … it is already all there ready, the devs only need to encapsulate them in the just containers and create coherent tools to manipulate them precisely (trim, boolean , precision measuring instruments)
