Am I the only one who thought that when Kirk was going wakka wakka on his strings Kirk was probably thinking 'where's my wah?'
As for the doodle, if I were there I would probably think 'Play some Metallica songs! That's why I paid to be there!'. Now I understand that a live show has to be a bigger then life event, with well planned show elements and stuff, but this seems a kinda weak live gimmick. U2 had The Edge do a karaoke singalong with the audience back in 1997 on the Popmart tour, but that at least was backed up by the biggest screen in the world (back then). When U2 hit the Netherlands on that tour Edge did Radar Love of the Golden Earring, our most successful Dutch rock band, and when he hit the chorus the audience was singing along so massively it literally stunned The Edge. Really funny too in a way.
This is....., not epic fail, but weak fail. If Metallica wants to do something specific that will appeal to a local audience, better to have the whole band do this Prince cover.
And speaking of epic fail, on the same Popmart tour, when U2 played Barcelona, Edge did the Macarena. But what nobody had told him that the song was from an artist from Madrid, and Barcelona is in Catalonia, the region of Spain that to say doesn't exactly like Madrid is putting it mildly. Probably the only time Edge got booed on stage since they became famous.