Is there an example scene or script demonstrating faded culling without a harsh edge? So that when you move through an object it has a gradient transparency along the culling edge?
We don't currently but I bet @Cameron-Micka might be able to add this to his list if it does not exist.
This is a simple as a material checkbox with an upcoming shader change coming to the MRTK (which will also include an example scene!). You can read more about the proposed changes here.
Fixed via #1743, which added the Assets/MixedRealityToolkit-Examples/StandardShader/Scenes/MaterialGallery.unity scene with examples of how to implement this feature.