I would need this option to remove duplicate games/damaged roms. I currently have over 10,000 games that would make it easier to remove them from the disk. I've looked for a little recalbox and found the file names after entering the game file options but it takes a bit more time.
It could be possible to add a switch in recalbox to show only clean names for roms without the region. But that means you cannot differentiate the same game from two regions. If it's still a feature request, maybe you can open an Issue on github : https://github.com/recalbox/recalbox-os/issues