I actually like this idea. It would make a very interesting NM fight, that could even be tied into a little Goblin storyline.
Imagine a tough NM fight where it starts off with one (or even multiple!) Goblin Airmen floating around hanging from balloons. At the start of the fight they can only be hit by mages. They drop bombs and you have to evade them, similar to the rank 46 storyline fight. The mages then proceed to pop the balloons, sending the goblins crashing to the ground, temporarily stunning them. Now the melee fighters can engage and damage the goblins. After a set time the goblins blow up new balloons and become airborne again.
I really like this idea. *Lalafell stamp of approval*