I've been thinking this for some time now, Airbenders should be granted this new ability for their arsenal. It would be something like..Lavabending, or Bloodbending..depending on the server it could be granted or disabled all together.
But how the move would work is an airbender enters a pure concentration type state (In minecraft terms) whenever said airbender enters this state they are able to fly without use of AirSpout, but if they are hit by any form of whatever, they lose their concentration and fall back to the ground. The cooldown would be huge (editable in config) but this would make airbenders a lot cooler.
I could imagine few airbenders using this and flying around while shooting Airblast down at people while avoiding other attacks from people..arrows, rocks, fire, water, e.t.c
An image of Zaheer using this;