When ArcGIS Pro - e.g. due to slow connection speed/network speed - cannot access/read/write the user only gets a "spinning hourglass". The User doesn't know why/what is going on, or if the process is still running or if AGP has crashed.
Here a pop-up window with a description (what AGP is trying in the background) would be much better and helpful user feedback!
Further example: when loading large data sets/services etc, here a progress bar would be much more informative (as implemented in QGIS).