Thanks for the useful work around.
We will still need to manually check for dvds before dragging folders around within Drives and Devices.
Yes, very true. I normally keep my movie DVD rips on a separate network share, so they're not a problem. Yesterday, I separated my TV show DVD rips, though, and now they're in folders with mixed filetypes, e.g. The Ali G folder contains both divX encoded AVis and DVD rips. As you say, I'll have to be careful in future when dragging these folders around.
In general, though, I've found the new functionality in 'rename files from properties' to be more powerful than dragging stuff around; although more visual in providing feedback, the dragging isn't as powerful and versatile as the 'rename files from properties' options, especially if you the contents of one folder need to go to different destination directories.