Playing less songs per show is not at all "working smarter". I know it's exhausting playing heavy metal on stage but the amount of energy they save by playing a couple fewer songs is nothing compared to just getting from one stage to the next.
People are going to leave with a sour taste in their mouth and not want to see Megadeth the next time around. That's on top of the sub-par new material and Dave's weird semi-political ramblings working against ticket sales.
6/28 Meh-hem Fest
7/9-7/16 Van Halen :|
7/25 Alice in Chains?
9/29-30 Uncle Acid & The Deadbeats