When a file is being copied or moved, if it’s replacing another with the same name, the info on both files (such as size, last modification date, etc.) should be shown (Thanks to Bruno Rodrigues for pointing this to me, even Windows does this!);
When ejecting a volume, if the command is refused because files on that volume are being used, the list of applications using the files in question should be shown, so we don’t have to hunt down every single one to safely eject a volume.
