To me it has always been more about the songs than the stage props and design. That's precisely why I don't really see the point in seeing bands like Maiden, Megadeth, or modern Dream Theater multiple times during the same tour leg. It's going to be the same show over and over again. Yes, you can look at that cool Icarus backdrop for 3 straight years, but isn't it meant to be a concert of a band playing songs, not an art gallery? With Metallica, you can go to just any of their shows and be surprised by the setlist and experience something unique.