I keep forgetting about Bentley. He belongs in the conversation for sure.
-He's black-haired and blue-eyed.
-He's 5'11", so in the suit he'd clear 6'0" easily.
-He's 39 years old, and has aged considerably well. You could get 10 years out of him and he'd still come in under 50 years old by the time he finishes up in the role.
-He's not exactly a "household" name that comes with a ton of baggage.
-He's a talented actor to boot.
And he comes with the Christopher Nolan stamp of approval (for whatever that's worth).