I'm sure this has already been said by other people, but there's actually quite a lot of material in the Myst universe that would translate well to the screen - specifically the novels that get into the backstory of the games. In my mind those would probably make better movies than a TV series (though they may not…

But look at an episode like "The Avatar and the Firelord"—going back to the beginning of the 100 Years War, you've got Firelord Sozin, who is nowhere near the Generically Evil Big Bad that Ozai is. Sozin's reasons for starting the war—his idea of spreading the prosperity of the Fire Nation to the rest of the world,…