Actually those "Airships" are hot air balloons that were actually sent out from recon missions in the Emerald City. The great OZ did not like how Sanctuary had been building up the past 20 years so he is constantly sending in cuircus air balloons to see what exactly the people are up too.
it seems like theres a lot of trying to find things wrong with diablo III. I mean I know other games have had similar situations but this one seems larger somehow. theres a petition link below to another petition that probably wont gather any signatures but I thought it was worth mentioning.
The flying monkeys are next.,,