What event do you feel is the most pivotal to the story? some would argue Ned's death, some would argue the birth of the dragons.
I feel the most pivotal event in the first novel was actually the death of Khal Drogo. I feel this because he had decided to move across The Narrow Sea and into Westeros to invade. If he had succeeded in doing that than the novel series would not be about a lot of political upheavals and machinations, but instead be a giant war novel series and I'm afraid a lot shorter than it has turned out to be. the major players now would not be the main characters in the story but others would be instead. The story in the north would also feel even more isolated and I daresay less important and/or just another feel of story altogether.
I feel the most pivotal event in the first novel was actually the death of Khal Drogo. I feel this because he had decided to move across The Narrow Sea and into Westeros to invade. If he had succeeded in doing that than the novel series would not be about a lot of political upheavals and machinations, but instead be a giant war novel series and I'm afraid a lot shorter than it has turned out to be. the major players now would not be the main characters in the story but others would be instead. The story in the north would also feel even more isolated and I daresay less important and/or just another feel of story altogether.