Be able to find duplicates, see photo information and give the option to erase duplicates in the program.

If you could search for duplicates, not only just by file name and size, but also by likeness (color hue, etc) then delete the ones you do not want. I upload our digital camera from time to time to get a backup and have not always deleted the simcard completely before doing so. When I do this, I bring over duplicates, but I name my photo directories after the dates in which I uploaded them, so they don't overwrite any other photos to keep from deleting or overwriting old photos.