Sorry but here I think you can already consider this as a dream, it is 15 years if not more that we talk about these topics, for now no one has ever come to get your hands on this part of Blender, so I would not want to destroy the your expectations but you’d better get with paid software like I did if you have this need. Or maybe use FreeCAD or also others you like.
some topics where we started discussion about that…
A recent illusion from these guy
And I remember that there was also a fundraiser to start a project that died.