I think all are possible, though maybe not probable.
Bad: Well, they've been playing it this tour, and on Popmart, they did it at every show. More people will recognise it here than in Monterrey.
Desire: Its odds improved after Sao Paulo II. It's dead easy to play, and RAH is U2's best selling album in Australia ...
Walk On: They've done it this tour and we missed out on Elevation, so maybe. Then again, South America didn't get Elevation either and Walk On wasn't played there.