Cosmete can't be adapted into live actions. Guys, dropped it already
Stormlight Archive is specifically impossible. It's an alien planet, with a typically strange fauna and flora. Except by Shinovar it barely resembles earth, means almost every time they are outdoors they will need to be at a green screen (and sometimes even in doors, interacting with animals and spren)
Avatar says hello.
I think they can do alien worlds that look great very easily. This could be movie/show/game and there are other examples. Though it would need big budget investment to be done well and really go deep into the characters, magic, worlds, etc.