ITs simple, and other games nailed.
Make a "dragonkin", a humanoid dragon, who is close enough, D&D ahve dragonborns and draconicans, wow already had drakonids, they on purpose put on the trashcan what we had to make this thing.
There is nor eason or sense to want be a full on dragon in a mmo, its bananas, is like saying you want to be an old god next void expansion, and you have a void elf turning into a humanoid yog'ssaron.
And just by saying that i realize its a possibility now, shit