IMO, Kite really didn't work. Personally, i do love that song but, it just didn't work either night.
As the song progresses, one of the roadies slowly lets up some large balloons with a kite attached from the B-stage on Adam's side.
Bono makes his way down the end of the stage and on the first night in Sydney he was using a cigarette lighter to release it. The wind blew that out and he struggeld with his teeth and then hands to try and break he string. I didn't see what was eventually used but the kite was finally released, only to get caught for a while on the main screen, near the speaker stack. All the while the band are just playing, there is no real purpose in the music at this stage.
Eventually the kite released from the screen, and then the band changed tempo and wrapped it up.
On the second night Bono took the kite from the Bstage up to the main stage only for the kite to drop into the first few rows of the crowd! Eventually, the crowd released the string and the kite slowly lifted out of the stadium ( a nice suprise to find in your backyard!).
In both instances, because the band waited for the kite to go, the song became second, which - as much as i love the theatre of what they are doing - should not happen.
Musically, the introduction of the didj was great! Maybe it would have worked as the last song before an encore - but not sure where they would have put that (after WOWY??).