Relax. The job of the screenwriters is to adapt and edit the books to be effective in a completely different medium. They are doing a fine job of it so far. Characters are omitted, combined, etc... Subplots are removed completely, to fit the t.v. medium, and to get the pacing right, something that fantasy novelists are notoriously poor at anyway. You try for a scene by scene reproduction, and you end up with a disjointed, bloviated mess like The Great Gatsby movie. Also, this keeps the nerds guessing, which should make it more fun.