It's not just the number of nodes, or the clarity, but also going into each node, and making sure the dial settings are also correct.

Even in a simple setup like the one you posted above, there are 47 parameters to try to duplicate, or double check.

 

Don't get me wrong.. it's great everyone is helping everyone else out, but just last week, I was duplicating a metallic paint material, and I think just double checking the nodes, and settings on one material took 30-60 minutes. I'd check, test render, find it wasn;t working right, double check again, test render again, double check again, ect.

For those of us used to the material room, it's no biggie, but is time consuming. For those NOT familair with th ematerial room, it must be quite daunting.

I was hoping Shader Spider would be adopted as a standard way or distributing partial material settings, but very few people have really used that method at all, good as it is.

 

Way too many people take way too many things way too seriously.