"I Me Mine" is a throw away song?
I agree that if the Beatles had stayed in "Beatlemania" mode all those years and never evolved, they'd be remembered really by pop music nostalgia fans (fucking hell John would still be alive now that I think about it) much in the same way many Doo-wop acts have been looked upon since that genre faded with the rise of 1960s era rock and singer/songwriter stuff.
BTW, something you forgot to mention is the wrinkle that sadly Bruce has added to his set, and that's the tribute to the late Big Man, Clarence Clemons in Tenth Avenue. And having seen Bruce in concert recently, there is a ton of differences between Bruce today and Bruce late 1970s-early 1980s.
One difference is that Bruce was a lot more... well Triple H-esque in his "promos" if you will in between and sometimes during songs. I think that's where the length of concerts back in that era really comes from more so than his massive set lists. Just rambling on with stories and whatnot while a beat was being played underneath him (check out his live 75-85 box for perfect examples). Today he is more Flair-esque (for lack of a better example off hand). Throwing off quick quips and letting his songs tell stories more so than "20 minute promos" and really being more Baptist revival sermon-esque than a homily spewing minister. Same message about the Church of Rock & Roll, but different methods of spreading the good word.
Point kind of being that a Bruce concert you saw 30 or 20 years ago, even with much of the same setlist, is not going to be the same Bruce concert you'll see today.
Back to wrestling, I think in a way "you see one, you've seen them all" kind of in a way is trying to ask the promoters to keep the illusion that it's not scripted entertainment. Like "can we please ACT like this is a real competition." Other wise it's just the Harlem Globetrotters and Washington Generals every night. You're not there for the game, you're there for the Globetrotter's act. Yeah, you are at the wrestling event to see the stars, but at the same time, a mix of what happens in each match can be good for getting your entertainment's worth if you go to each house show along that current tour.
It is a good topic though.