I just think some fans get hung up on seeing different songs in the set list every night when they log on to the 'net, as if playing totally different songs from night to night is the bomb, regardless of the negatives that might come from that approach (certain cities missing out on special songs/events, the band not being as locked in on playing a song they rarely play, etc.).
You and I will never see eye to eye in this regard as I love the rotating setlists. That said, I know that we'll never see the setlist variation that we did when MP was in the band, but even some variation from show to show is nice, like what they did on some legs of the Dramatic tour, where they had an A and B setlist. At least there was some variation and for those of us who enjoyed going to multiple shows, it gave us something different to see. Even if they were to take that same batch of songs and further shake things up (intermixing songs from the A and B setlists, perhaps dropping out some songs that were in both, so that there might be 4, 5 or 6 standard setlists), it would not be a major negative thing. The guys would still have everything rehearsed to a T and it would provide more unpredictableness like what we were used to in the past.
And frankly, one could still complain that some cities missed out on special things on this tour - specifically that only Boston got something especially special. Yeah it was for a DVD shoot, but still, nobody else got that.
For me, anyway, the problem with the way they do it now isn't the lack of rotating set lists, but simply no room for derivation AT ALL. No extended solo sections, no impromptu jams, nothing whatsoever to make any one show different from any other.
I'll be the first to agree with the lack of derivation at all from show to show (which is why I personally wish there was some song swapping), but truth be told, there has been a change over the course of the tour. If you were to listen to ToT from the beginning of the first European leg of the tour, and compare it to how it was played towards the end of the North American tour, you'd see that they're stretching it out more now, allowing for maybe a little variation. Nonetheless, it's far less than what me, you and many others would like to see.