Congrats on the license! Eagerly awaiting the incredible work that's sure to come.
Nightwing would certainly benefit from your take!
Not to mention you would be my absolute hero if you made one haha.
As others have stated, Wonder Woman is definitely up on the list. I feel like most sculptors focus on portraying her strength, often losing the beauty and elegance associated with the character in the process. Using Stanley Lau's illustrations as well as the Mythos-type work built2shred mentioned would be ideal.
Aquaman on the throne is another sweet concept to tackle!