It would be nice to have an easy way revert back to the the view state the model was in before utilizing the Show Only Selected Members and Selected Assemblies Off.
i.e. I want to isolate an assembly, work with it, and then turn the other members back on when done.
The only way that I am aware of turning things back on now, is to use the All Visible tool, which shows all items, including the ones that I had previously hidden such as Model and Connection boxes. Then I need to go filter and start turning objects off again.