Helen McCrory - Barbery Dustin
Henry Cavill - Arys Oakheart
Sarah Bolger - Jeyne Westerling
Kevin McKidd - Victarion Greyjoy or Jon Connington
David O'Hara - Lyn Corbray
Jason Isaacs - Aeron Greyjoy
I understand none of these are possible because these actors have jobs or are beyond making TV, but they'd be perfect and I don't care.