I would like to see a one-click copy button as well, but in the meantime, I created a batch file and just put a shortcut on my desktop.
Just change the drive letter if necessary. My burner is E:
Here's my batch file:
"C:\Program Files\ImgBurn\ImgBurn" /mode isoread /src e: /dest "%temp%\disccopy.iso" /overwrite yes /eject yes /close /start /waitformedia
"C:\Program Files\ImgBurn\ImgBurn" /mode isowrite /dest e: /src "%temp%\disccopy.iso" /eject yes /closesuccess /start /waitformedia /deleteimage yes