Looking at the privacy, this was unimaginable 5-10 years ago. But Facebook's strategy of little steps is working. I'm quite sure people will accept this and most comments won't go beyond how amazing this is, creepy but still awesome and similar blabla.
This is exactly why I don't tag photos of myself and remove tags when a friend does it. I have no idea why people are zealous about tagging people in photos, if it's a friend you already know the name, if it isn't then do you need to know?