I think it was good having the weeping angels as a one off baddie but when Moffat brought them back over and over again, they seem less scary.

I'm surprise the Doctor has never read social etiquette book. Maybe he thought because of his intelligent that he could just improvised. I liked the reference to Sarah Jane on one of the cue cards.

This scenario is used on other shows too. I saw it done on "Monk" where he made out conversational cue cards.

Twelve seems to lack the charm of Ten and Eleven but they both could be blunt too when people aren't able to follow or understand what he means.

Ten would give a speech about his credentials and challenge people. It worked in "Voyage of the Damaged. Not so much in "Midnight". Because he thinks his brilliant, he just assumes everyone else will too.

Eleven: I'm making perfect sense, you're just not keeping up.

Twelve negotiating skills are just different. But may not suit everyone. There's still room for growth though.