I'd guess that one of the big ballads will get a regular spot this run instead of Scars, probably BoR. Other than that I'd guess THINFS, KO, RC and WWWU will be the maximum of new material played. Probably GBTM at some shows as well.
As far as "suprises" go, maybe songs like Superman Tonight, WWWB, Last Man Standing, ILTT, Water Made Me etc. could get a play or two.

I just don't see Jon digging into some rarities from pre-2000 in America as there's really no use. Hey God from Anaheim 2010 comes to mind when the band did perform a great version and no one in the audience gave a ****. If there will be some cool suprise it will come in Newark or the Canadian shows.