Tom Cullen...interesting. Good-looking, but for the puffs underneath his eyes. And IMDB lists him as 6'1"...which means he's likely 5'10" or 5'11"...the height bit, unless he's really 6'1", would not be good. I KNOW this is awfully superficial, but the eyes bit is something to be considered when thinking about the guy lasting for several films over the course of a time period in which he will get -- older. (Come on, you know they did well not going with Dougray Scott in that regard...with apologies to Mr. Scott, of course)
The question remains: Is he interesting ? Or a relatively vapid and bland good-looker ?