(Material / Shader) Access and Ignore World-Settings in Object Shader Editor

This feature is meant to complement Shader-to-RGB node.

As great of a node Shader-to-RGB is, it doesn't give you predictable behaviour over a varied production pipeline, because it isn't just influenced by the lights in the scene but also the World settings. Meaning, if you create (perhaps) a Toon-Shaded material with Shader-to-RGB and Color-Ramp, in might look fine in the default settings, but the moment you change the world-color, strength and even HDRI, everything goes out the window.

This is because stylization in this case is working backwards from PBR, causing unnecessary complexity which ideally shouldn't have to be dealt with. Sure, we could work-around all this by just compositing it later, but this isn't a good option when you're working on a live real-time project.

One of the ways to counter this is by creating node-sockets (perhaps as Input Nodes) in the Object Shader Editor, allowing you to not only access World Settings to apply it manually later, but also allow the shader to completely ignore it in the initial stages (or, alternatively, a creating a shader that ignores the world-settings by default).

Here's what the process would look like:

1. Assume that World Settings will influence the shadows of the object.
2. Add a shader, or input-node that informs the shader, to ignore all the World Settings, and create a stylized material that can work predictably across all World-Settings.
3. Now create a new node that can allow you to access the World-Settings separately (if you view it via Node-Wrangler, you should be able to see how the settings affect your object as if there are no actual light-objects in the scene).
4. In the latter stages, control HOW the World-Settings affect the shader / object (such as, only the shadows you created and function predictably work as "masks" for the World-Setting color or HDR-lights affecting the object, etc.).

This permits you various degrees of control that you wouldn't otherwise have with just Shader-to-RGB, and can be very useful for Stylized Rendering in real-time.

So please make it possible to access the World-Settings in the Object Shader Editor, that would be super-helpful !