My guesses:
-Something for live collectors --- A rare Live show
-Something for everyone that has to do with an epic live show --- Maybe, LP's actual samples they use live
-Something for remixers --- Some multitracks from games, even though rock revolution is the only one we haven't got
-Something for everyone that has to do with an epic release --- don't know
I reckon it could have been one of the old songs, think about it, the person wants to keep it a surprise and in the Mr.hahn LPU chat, he said they might play older songs.
As everyone else said, the elephant things, and the section just after chester falls onto the bed (where he's supposedly falling wrapped in the bed covers)
I reckon No Roads Left may be played. Mike said before the cancelled china shows he wanted to try a least once, And I just bet all my money it was going to be on the china setlist, so I reckon mike may add it to this set for at least 1 show.
while doing it, can you also try and find out the summer sonic after song aswell.
Astat says the first part to this one is from an audio book of war of the world, the sanitarium part, I have no idea.
I agree with what some people here said, he's good, just not as cracked up as everyone clams (My opinion), his scream (well, growl) sounds too forced, and his higher pitched singing voice is too high.