The best and most frustrating thing in regards to the book would be that the story is told from eight different perspectives, with each perspective held in a chapter. Just as you begin relating to a character and therefore are desperate to see what goes on to him (or her), you are thrown off for assorted chapters.
Yet Martin's character development can be what makes the books so enjoyable to see. His method of creating three-dimensional characters with a lot of depth, feeling, and back story is exactly what keeps the future prospect from losing interest.
The determination with the 13-year-old exiled princess and child-bride, Dany; the bleak coming-of-age story with the bastard, Jon Snow, with the northern Wall; the raw emotions of young, tomboyish Arya at King's Landing; the noble intentions of Eddard Stark amidst a court of mummers; as well as the sarcastic wit with the impish Tyrion Lannister are just a few with the assorted cast of players you will find yourself rooting for in this bloody game of thrones.
When he did release that book, he left us with hope. That book as well as the sequel were to be essentially one large book spread into two parts. With a huge cast of characters spread allover the land, Mr. Martin thought we would only focus on the character a single part with the world, leaving the development with the rest with the characters before the next book. But there is hope! A lot with the chapters were already written. "Gosh! He needs to have it out by Christmas 2007 for sure", I remember thinking in 2005.