CAD IGES Importer, UV unwrapping and converter to FBX
CAD, Alias, Rhino3d, SolidWorks, CATIA, and other NURBS proffesional 3D software do not export in triangles. Are much better tools than Blender and Maya becuse make good reflection surfaces and has more control on the surface but do not creates triangles FBX.
We need a CAD IGES Importer and convert to FBX. That alowed to make UV unwrapping, flattening/unrolling of all UV meshes and tree merge fixing of the objects. To be rebuilt the 3D object to triangle meshes. So that we can use better assets inside Substance Painter and then return back to that particular software or send it to Unreal or Unity.
Substance marketing can think in a new editor tool that includes automatic Ai NURBS CAD hard polysurface to triangle mesh FBX conversion. That includes also automatic Ai learning using statistics UV unfold unwrapping.
UV Takes the same amount of time as modelling and is a process that can be automatised
https://www.rizom-lab.com/ is a good tool but this software is not growing fast in a smart way.
PiXYZ is extremely expensive and is also not smart.