I don't think there's a "feature suggestions" thread, so posting here:
Moving a ton of music from the phone to the SD card using the file manager, I just see "Moving files..." and the animated progress dots, but no indication of actual progress, and no option to safely pause or cancel. I have no idea whether this will take another minute or another hour, and in the meantime I don't dare to switch apps. That's not great. Ideally this would have a pause option that would place a notification in the action center that says 'File move paused (resume / cancel)' or so.