As promised, I submitted a package whose sole purpose is to remove the intro video and registration screen from your images.

You can find it here:

[url]https://www.afp548.com/filemgmt/visit.php?lid=71[/url]

For those interested, it simply creates two blank files:
/Library/Receipts/.SetupRegComplete
/private/var/db/.AppleSetupDone

The existence of these two files is all it takes.