I would like to see a new button or menu option that clears all selection on ALL maps in one go. To me it make sense that it becomes an option in the context menu when you click on the maps node in the catalog pane as I show below, but if esri wisdom see fit to place it elsewhere that's fine.
Why would I want this? I am using the presentation mode built into arcpro. During rehearsing I click on map(s) and introduce a selection. In a multi-map project, which one would expect if using presentation mode, it become tedious to enter each map to clear the selections on one or more layers so the presentation is left ready to go. It would be good to have a button that instantly clears all selections on layers/tables in all maps.