Unhide Elements in View
Reveal Hidden Elements command is weird and hardly of any use. I mean actual use, efficiently. 'Unhide Elements in View' extension from PangolinTools is the right way to unhide various stuff. It acts like a filter, listing all hidden things, even the ones that you might visually miss. Too bad it hasn't a preview pane or a 'go-to-selected-hidden-elemen(s)' feature. Even so, it is ten times more efficient than the original Revit command.