you are certainly right beside the fact you forgot the exit being off of the cliff. i think it was a matter of bias, so pardon me for that, but let us not forget the cliff! haha!
The book and the movie were completely different in my eyes
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in the book the exit is off the side of the cliff. In the movie it is a little room that you can just walk into if you have the griever key.Also in the book the maze was taller, and was way underground. In the movie the grievers were like spiders, in the book they were like slimes with metal arms. In the book the maze was underground in alaska, in the movie the maze was above ground in the scorch. i could name more but i think i've made a point. haha
in the book, the outside of the maze was cold because it was in alaska, the scorch on the other hand, was far away in mexico city, which is more on the equator, it got more sun flares. also i just added new shaded pictures, they look cool. check 'em out!