Do you know of any tool that would integrate with the shell and allow adding files to copying queue instead of copying simultaneously a few files? How I imagine the scheme:
- I drag and drop file A from drive X to drive Z
- the file starts being copied
- I drag file B from drive X to drive Z
- instead of starting copying, the system waits until the first file (file A) finishes copying and only then starts copying file B

This would be especially helpful when copying from CD/DVD drives while still browsing their content.