Well, duh? I thought the recent European sets made that clear.
Plus, I read an interview with Lebrie a few months ago where he mentioned that they were doing that. It was cool that they did switch it up every night but honestly this will be better for Lebrie's voice. He'll sound a lot better live because they're doing the same songs for a whole tour.
There's always a chance that some songs will sound a bit off if they're only played once in awhile. Overall this will be better for their live sound. When was the last time you heard Rush or Megadeth sound off at all musically live? I never have before, so there are positives to doing this.