I think they should give us DH a small quest chain to unlock flight, meta customization and hooves option:
A bronze dragon becomes aware of an alternate reality when either Gul’dan or some powerful demon is about to do something disastrous or perhaps a powerful artifact is about to fall into the wrong hands.
Illidan is away so the dragon will send the next best thing at combating demons (the player character)
We go, we do what we do best.
The best option to keep the whatever out of the wrong hands is to consume the skull, demon heart or absorb the objects power.
Boom.
Permanent wings option unlocked.
Hooves option unlocked.
Fel-stalker dreadlocks unlocked.
Clawed fingers and toes option unlocked.
Metamorphosis customization unlocked.
And the big one…
Soar (like dracthyr)
1:1 reskinned equivalent spell.
2 second cast where we go meta and launch into the sky. It has 10 second cooldown that starts after launch.
Meta lasts for duration of flight.
When you land shadows surround and swirl obscuring the transformation back into non-meta form.