Could be useful. Especially the resume feature. Will have to take a look.

The biggest thing that annoys me about the standard copy function is how it completely pauses when it encounters a problem and waits for your input to tell it what to do with a file it's having problems with. It would be much better if it just skipped any problematic files automatically (you can automate this after the first file issue by ticking the "perform the same action" box for similar files, but only for that same issue) and once it had finished copying everything to then open a window listing all the files it had a problem with and ask what to do with each. Maybe a tick box next to each in the list to abort or retry each copy.

Something else that annoys me with copying is left over folders. How many times I've moved a while directory to a new location, but at the end of the copy process it has alerted me that something couldn't be moved because it was "still in use", but on looking at the source location only the containing folder is still there and all its contents did successfully get moved. But it still refused to move or delete the directory folder. Maddening.