I don't understand what you are asking for / about. VA Outline is designed to show you an overview of the current file, which is exactly what your screen shot shows.
If you want to see the details of some type, for example one of the classes you are referencing, have you looked at the Hovering Class Browser, the bottom portion of VA View:
But these two forward declarations are also part of a namespace, which is why they have been grouped in the namespace node. If we did not show the namespace node then we would not be accurately showing you the outline of the file, and you would not be able to perform operations on the namespace.
I think that's the dilemma. Those lines are both Forward Declarations and part of a namespace. I would be fine if {} baz had a subnode named "Forward declarations" too.
My confusion started when I clicked the triangle on the forward declarations nothing showed up (compare fred's appearance to foo's -- why the triangles when there's nothing there?)