I personally don't want that to happen. It's not like they rotated the songs in the entire tour as a whole so much more than they do now, because back then, they simply had a gigantic master setlist and rotated it between each show. In this case, they have the same gigantic master setlist, which they use to make smaller master setlists for each leg, and then they rotate those between each show.
My point is, I don't mind it if they keep every leg different from the other, while making the shows of each leg much of the same compared to one another, because that way they keep the variety of songs represented throughout the entire tour intact, and every fan will know what he's coming into by looking at other shows from the same leg. I was extremely happy to know that the last show in Israel would either have Metropolis or Learning to Live as an encore, when in the old rotation format, it could've also been As I Am or Pull Me Under.