It is an action heavy RPG, but if Bethesda would implement features like this, it would eventually become Just Cause 3: Skyrim.
that's quite the leap of logic wouldn't you say?
for one if they implemented it, it would probably be one of the hardest things to acquire in the game instead of putting it available early in the game.
and second, if implemented it'll also have it's drawbacks like a timer for how long you can be a dragon and a long cooldown or something akin to that effect.
like i said earlier, here's what how i would imagine it:
"your dragon form power could be something like this:
-able to fly
-biting for melee attacks (can't block while flying, you can't really use your wings to block in mid flight)
-as a dragon your only form of ranged attacks would be from dragon shouts (no magic and of course no bows)
-a timer for your dragon form, you could extend the timer by charging the shapeshifting dragon shout.
-physical power is a bit higher than your normal form but dragon shouts power would be unchanged as those are fueled by your soul not your body. "