The Goal of Transparent Interface is to simply mask the convaluted interface that appears when using Blender3D. It should be noted that this Screen Layout is supposed to be a primer to help a new Blender user adjust to the interface by focusing on the key features that they will be using the most.
Transparent Interface has nothing to do with being opaque. It contains 4 minimalist Screen Layouts.
Transparent Interface v1
It also contains a HotKey sheet and tips on using Blender from a personal perspective.