I like Game of Thrones, but I don't love Game of Thrones. This is mostly because I have a hard time following the story, at least I did until I read the books. There are just too many characters and none except the Starks were really introduced properly which makes for a confusing show. If George RR Martin thinks he can expand the story with three extra episodes per season, then I say go for it, at worst nothing will change, at best it will clear up a lot of the character confusion and make the show much more watchable.