How can I create inputs and outputs for transmission ?

Thank you for your reply.

Yes - "exposed parameters"...

The most problematic issue in making and using "glass" materials in Substance Designer is the inability to transfer information about "transmission" properties of glass to other applications. As you can see in my image illustration below, I can "create" information about the "transmission" variables of transparent materials such as glass in Substance Designer, but there's no good way to get this into other rendering engines.

There are several rendering engines that were and are inherently physically-based renderers, to my knowledge, Maxwell Render and Arnold. These have a few "transmission elements or properties" at their core. That is, Maxwell Render has the two IOR variables, "Nd" and "K" and some others as a component of every material. Arnold is similiar in that it a "material type" of transmission at its core for the standard surface shader. These two rendering engines share a bunch of the basic transmission variables - IOR, Abbe, etc. Other rendering engines that we designed prior to the advent of PBR, of course, use different kinds of things to create a glass shader. For example, Corona relies on "reflection" and "refraction maps" as kind of a stand-in for the basic transmission properties of transparent and semi-transparent materials. I'm not too worried about these earlier rendering engines. But, for the more modern PBR engines, ......

If we were to develop a standardized "node" for Substance Designer that carried the information about these few common transmission variables, such as in the example image below, would it become possible to have these elements picked up as exposed parameters in the Adobe Plugins for Max, Maya, etc, so they could be directly read into Arnold ? (...in addition to the existing Opacity exposed parameter?)  I can make a standard node like this, and Adobe certainly could make a standardized node and publish it in a future version of SD.

Essentially, I'm asking if it is possible in the near future to have a more complete set of exposed parameter elements for "transmission" in the Adobe Plugins so that "glass materials" could be more readily imported into MAX, MAYA, C4D, Houdini, etc. That is, so that Arnold users, and possibly Maxwell users could import SD materials into these rendering engines that would be readily recognized as being "glass" or as "transparent" and "semi-transparent" materials with adjustable properties?