I've made my thoughts on S&M2 clear a while ago. Overall, I enjoy it a lot. Though I almost always enjoy any Metallica show.
That said, I think it has a lot of unfortunate knocks against it.
- The super similar setlist. I know people who went to see this wanted to see the same songs as the first time, but this was MOSTLY to be seen as a recording for the vast majority of fans. So while some thousands got their wish, millions more got to see the exact same songs done again. I think that should've outweighed the decision to give the attending fans the same songs as the first go around.
- The band sounds less tight. Not much more to say about that. They were just ON TOP of everything that first time, but this time it's just kind of a typical Metallica show performance wise but with an orchestra.
- The new songs have largely pretty boring orchestration due to the loss of Michael Kamen who was just way ahead of the game on that ability. So instead of brilliantly thought out orchestra pieces, you largely had them doubling melodies/riffs already in the song. Plenty of exceptions, but very little stood out as interesting on the new songs.
- The mix, while largely good, seems to think of the orchestra as background noise and nothing that should be upfront. So you get a lot of cool stuff just buried.
- Crazy missed opportunities for songs that would've been perfect.
That said, there's some really cool new stuff there.
- I hate Unforgiven III as a song, but I really like this version
- Similar with The Day that Never Comes. I REALLY dislike that song otherwise.
- The orchestral only songs are very cool and welcome.
- AWMH was very cool. I wish they didn't play it constantly now, as its novelty has worn off, but it was super cool.
So overall, I really enjoy it, but consider it a whole lot of missed opportunities for something TRULY amazing.