Even GNR cant get audiences jumping and partying all night. The highs of the show (audience standpoint) are always a few opening songs, Welcome To The Jungle and Sweet Child O mine.
I dont know maybe the audiences are old or theres not enough drugs or alcohol involved. I have learned not to mind, Im having a good time and partying trough the gig. I also like to be respectful to those around me and not jump all the time even if I wanted to.
So my point is that if Slash added a few hits it would create audience reaction. If he chose differently from SMKC catalogue I dont think it would make much difference