The band performing a David Bowie song is a lovely idea and keeps the memories of the man alive. After all, he is a musician who reinvented the style of music repeatedly.I guess you are right, it's always been that way. Still would be cool to add one extra song from Parachutes/X&Y, perhaps instead of Bowie song?
BTW if my memory is in good shape, I remember guys almost never changed setlist, maybe one song.
I'm wondering they couldn't perform Green Eyes always, so it's a possibility to hear Amsterdam (we got a slim chance to hear it at AA)/Scientist/Speed of Sound.