This only works for mages since Slow Fall is required.
1) Zone in and stand on the elevator as shown in the picture; face the proper angle and stand in the proper corner.
Just after the elevator started zooming down, enable Slow Fall.
2) The elevator is now zooming down, you have Slow Fall enabled, you are standing at the proper angle... watch for the opening! When you see it, jump forward (I use a wall-jump key on my G15: W,Space at the same time).
If you jump very very early you might Slow Fall over the landing zone (but this is corrected by using Blink when vertically above the landing zone - WoW will place you on the ground)
If you jump far too late you will miss the landing zone and will end up having to take the 2nd elevator.
3) Enjoy the flight!
4) The pic shows me queued up for a great landing without having to use Blink... But if you are going to overshoot the landing area, use Blink to be placed on the ground below you.
5) 2nd elevator is completely skipped !