It has little impact on me (Though, I wish a few more mounts had better flying animations... Some are just running, but in the air...)

Since, the whole "Aether Manipulation" thing. Really, the thing that irks me about flying is when you can't fly in ARR zones on a Griffon or Dragon that literally has wings and thus shouldn't need aether manipulation to fly...

That and the whole thing with the Kojin blessing where it was "Now you, also all of your mounts, can now breathe underwater! Yay!"