I don't think STP needs to play too many more songs. What I think they need to do is jam a little more. I would love to hear Dean, Robert, and Eric improv more and extend songs. They need to play looser and strut their stuff instead of playing the songs close to how they were originally recorded (especially on songs they have been playing for a long time like from purple and core). Sometimes STP is TOO TIGHT. STP is missing one ultimate song they jam out or make legendary in concert. It would be very cool to hear to hear Vasoline, Big Empty, Trippin, Huckleberry, Hickory, Sex Type Thing, and Creep with additional solos, breakdowns, etc.
I loved the added solo at the end of Sour Girl last summer and how they kind of were off cue on the beginning of Huckleberry a couple of weeks ago. Makes each show more exciting and unpredictable.