This fuck up talk makes me wonder ...
I don't want to downright presume one of my beloved bands is lazy, per se, so that gives two rather sound reasons to keep a stable setlist:
1.) To have the stage show accurately set up and use lights, pyros etc in the best possible way
2.) So as not to get thrown off by surprises and new song and play tightly and flawlessly.
Now...
1.) Eddie and pyros and everything are cute, but I'm not five, so there's only so much of it I can appreciate before I turn to what interests me the most - which is the music. Now, don't get me wrong, the LOTB sets are bombasting and great and everything, but even then they should be secondary to what the band actually plays.
2.) Well... it's not only the Stockholm gig, sometimes they have problems. I don't expect them to play everything flawlessly and be virtuosos, so I don't really mind, but it leads me to the following thought:
It's unthinkable with Maiden, because they're firmly set in their ways, but I would actually like something like rotating setlists (or at least a few songs within) - in fact I always appreciated when a band did that. Not only would it give the concerts a much more unique atmosphere, but it would also open up more possibilites for crowd interaction for them (that is - the possibility to change the set a bit according to the audience response and the atmosphere in the venue). I mean - it is somewhat mechanical - you have an obviously "Play Classics" crowd before you, but you must play SOTC or FTGGOG for them, because you're set up that way. Or, the people seem bored with the usual stuff, so you'd throw them off with something out of the left field, like The Unbeliever or something.
Meaning, they do fuck ups anyway, but this way it would be actually "for the fun". I'm not sure how many people will agree, but I would find it a bold move. Or - like I said - at least switch some songs around. Play Wicker Man one night, DoG the other, Futureal another etc.