To make data inspecting easier sometimes will help to have some of the hidden attributes available in the Table View.
Exposing attributes inside the FME Workbench is great but it will be also good to have the same option inside FME Data Inspector; to avoid reprocessing. That is very useful when working with a large dataset with many attributes. I've experienced a need for this while working with BIM/IFC files.
Attributes inside Table View can be used for data filtering and that helps a lot while inspecting some dataset.
Expose attribute/s functionality inside FME Data inspector can be, for example, implemented as an context menu that opens on the right click while selecting one or more hidden attributes from the Feature Information Window.