I think The Way of Kings would make an awesome movie, except for one thing. It's way too long to fit into a movie properly and the quality would suffer from that much as the Harry Potter stories have, especially the later ones.
The early Harry Potter movies were horrible because they followed the books too closely. The screen writing improved dramatically after the second film.
I would have to disagree strongly with that. I distinctly remember walking out of the third movie thinking "what in the
world was that?!?" And the fourth one was not
Harry Potter and the Goblet Of Fire by any means; it was "Harry Potter In The Triwizard Tournament." There was so much more relevant material in the story that they simply didn't have space to put into the movie, and it really suffered for it.