I brought this up to a server of my own, and some seemed concerned on the new method's existance, even to the point of avoiding Gen1 flying mounts. Some are willing to try it out, while others seem pretty frustrated about it.
With this being said, I bring this Suggestion to ya. If possible, maybe add a way to toggle between flying methods. Whether it be a button or something in the control settings client-side, or even a config thing if it has to be server-side.
ALSO, I noticed that it isn't possible to fly in reverse or hover in place with the new method, so I'd like to suggest that as well. Probably possible if able to go to speeds 0 or lower/negative.