The casting that will be most interesting for me will be Brienne of Tarth; one of the few major characters of the series who hasn't been introduced yet. It will be hard to find anyone with the right build and looks, and with acting ability, I think, so I'm wondering if they'll uglify someone.
Yeah it's not the sort of role many actresses would want I imagine. Speaking of The Tudors I always wonder if Joss Stone was aware of Anne of Cleeves' fate as a wife of Henry VIII when she signed the contract to play her. My top tip for Brienne - the woman who plays Starbuck in BSG, give her a crap haircut, a few uneven facial features and you're there I reckon.