It is no secret among readers that A Storm Of Swords, the third book in George R.R. Martin's Song of Ice and Fire series, is not only one of the best in the series, but certain the most action-packed. A Feast For Crows, the fourth book, sees some of the more interesting character's drop completely off the radar, while other less-interesting characters, like Brienne, take up the slack. This was because Martin split the story up, with A Feast For Crows and A Dance With Dragons taking place at the same time. Presumably, the show's creators will combine the books, which, together, have at least two season's worth of content.
But readers are worried that A Feast for Crows and A Dance With Dragons will make for dull television. Some characters, like Dany, do not develop as quickly as some readers would like. Other's, like Arya, do develop, but are taken away from the main action.
Whatever happens, the Game of Thrones writers have their work cut out for them in the coming seasons.