Slicer setting for default value

Currently, I manage this using bookmarks, but that requires users to manually click a "Reset" button to return to the default value. In one of my reports, I actually needed the slicer to remain empty until the user made a selection—unfortunately, there’s no built-in way to do this. As a workaround, I had to add an artificial "--" row to my dataset to simulate an empty option, but this isn’t feasible for all data sources. It would be especially useful to have an "empty selection" option with customizable placeholder text (e.g., "Select a department") to guide users. This would significantly improve report usability and streamline development.