Quote - Poser's procedural pattern generators are a very limited subset of what is needed. I've asked them several times to let me at the C++ code so I can add more types of nodes.

And they haven't taken you up on that offer?!!!!     I think you know more about that material room and the nodes and what is needed than anyone who currently works there, or even the creator of Poser for that matter.

Think us writing to them and petitioning them to let you would help? 

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi