I'd like to reopen the conversation on allowing Demon Hunters a flight ability that might operate similar to Worgen's "Running Wild". Previously, the devs had commented that they had considered it, but that ultimately they felt it did not fit with the theme of Demon Hunters and mentioned that even the most powerful Demon Hunters were only capable of gliding.
These statements seem unreasonable following the way they handled Demon Hunters throughout Legion. Whenever a Demon Hunter would aid the player in the Broken Isles, they would swoop in from the sky and then launch away with their wings. Illidan, in the Cathedral of Eternal Night, "takes to the skys" to fight the felbats in the air as we battle the second to last boss. It seems that lore and theme are no longer good enough reasons not to have this feature.
I do not believe that this would cause any balance issues, as Demon Hunters could have a standard cast time (possibly involving a badass take off animation) and we have seen success in a player flight form in druids.
It seems to me, that this could be a very cool and fun addition with no real drawback.
Additionally, another interesting feature for Demon Hunters might have the added benefit of attracting more players to the class as we are currently the least played class if I remember correctly.