Think about it! It's a lush detailed setting with AMAZING art and locales.
TONS of lore, characters with real depth, and tons of small stories to tell.
Potential for multiple open cities like the North Pole, Fire Nation Capital, Omashu, Ba Sing Sei.
Last but not least, the combat variety would be INCREDIBLE; melee based, earth, water, air, fire bending, over land, sea AND water!
This franchise is a game GOLD MINE!
Now, back to reality, after realizing this game is NEVER gonna get made. :-(