Rammstein has a bigger show, but they're the only one? Maybe Metallica? Kiss had a pretty good stage show, with interactive stage parts, but that was needed because Kiss sucked live. Sorry, "live".
When you look at what massive pop acts are doing, their innovations are screens, dancers, and costumes, which again, distracts you from what's going on in front of you.
When I go to see Iron Maiden, I want to have the time to watch the greatest active bassist in the world, two of the best metal guitarists of all time, and Janick, do their thing. I like having the time to look at H as he solos, or catch Dave smiling, and to watch Steve sing every fuckin' word. Sorry, *that* is what is special to me.