To be more specific:
From https://www.buffed.de/World-of-Warcr...hen-1393543/3/buffed: The change between human and dragon form - is it purely cosmetic, as with the Worgen, or does the humanoid form have any gameplay influence?
Ion Hazzikostas: It’s something we’re actually working through right now internally. We understand there’s definitely desire to be able to be in your humanoid form in combat in a way that you can’t be as a worgen. But of course, if you’re doing a deep breath or using your wings, you can’t do that in humanoid form. We want to give players as much flexibility there as possible. The dragon form certainly isn’t like a metamorphosis for demon hunters. It is the innate form that the Evoker takes, and all their abilities will be usable in it. But we’re looking to find ways to work humanoid form into combat. But ultimately, we want to let players do what they prefer aesthetically, rather than forcing gameplay based on mechanics.