Getting a little concerned that no extra Greyjoy characters were announced at GoT's comic con showing. I'm really excited for Alexander Siddig as Doran Martell, but the lack of Victarion or Euron casting announcements is alarming.
The 4th book barely focuses on the 'main' characters at all (Tyrion, Dany, Jon, etc) but I highly doubt the show will follow that. They'll probbaly really underplay the Ironborn plot in order to give the more popular characters screen time.
Not gonna lie, I didn't really care for the Iron Islands parts of the books. Just seemed like another plot that took pages away from the characters I liked.