I would even go a step further.

In december 2012, one can make an object and a texture.

But one can NOT make or sell a shader.

We have so many render options, that the outcome is competey different between the Poser verisons and render settings options.
A perfect Poser7 shader become trash can in Poser8 wirh IDL.

A shader that worked perfectly in Poser8-Poser9 can become garbadge in PP2010-PP2012 with Gamma Correction.

The relationship between diffuse_color and the texture depends heavily if not completely on the render settings and the different Poser versions, and the nodes have to be changed for every Poser version/render setting option.

I will not even talk any more about AO on anything, or IBL lights.
There is only One sun, and take my word for it; There is no image on the sun.

Agreed Ester, a good script can save time.
But if I have to spend more time to undo older stuff,or stuff I do not want or need in my current Poser setup/render setting,  I would rather not use it.

Most users click or drag and drop or run a script and render.
Few users dig deeper to correct everything to their own Poser versions/setups.

Last point.
Every Python upgrade, all shaders have to be recompiled. 
Using older scripts in newer Poser versions can make Poser unstable and even crash.

A script included in Poser at release time? OK, any hr of the day.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!