I agree, only benefit I would see with 2 stages is that when the bands are alternating stages it would less likely mess up any timing issues in setup in the next stage (since it should be empty with no one performing on it yet) should any of the bands have gone over their timed limits. I see it more important for the next day if anything

They should move everything an hour early and give Tool at least an extra 40mins of play time!! heck doors open 2:30 and music starts at 4:25, then next day doors at 1:00 and music starts 1:30