I'd be down with Sajak, as long as Vanna White is part of the scantily-clad supporting cast.
(edited only to say the Vanna White I remember, although I'd say she's still pretty despite being only a year removed from her 60th birthday. My gosh - where has the time gone?! It seems just like yesterday that she was in a Playboy pictorial..)
Shifting the discussion back more on topic...
Matt Damon could pull it off. Brad Pitt could pull it off. Not sure either are interested, however, and not sure that either would be considered. Something tells me that the writers/producers would prefer to keep this role within the original British heritage. Sorry, Denzel. My hopes of you landing this role are fading.
Jude Law, maybe? He'd fit the role pretty well, although he lacks the tough guy image and has historically played white-collared roles. Still... has the looks and is fairly young.
Jason Statham? Not sure. Too many C-grade tough-guy flicks and quite frankly too much C-grade acting. Not saying some of his flicks aren't entertaining, but not quite James Bond level either.
Damian Lewis? One of my favorite British actors. Broke through with his epic portrayal of Lt. Dick Winters in Spielberg and Hanks' Band of Brothers series. Which then led to a very strong performance as the lead in Showtime's Homeland series, and is currently kicking some ass in the new Showtime series called "Billions", alongside the always-steady Paul Giamatti. But is the Bond genre ready for a ginger? And would Lewis even consider it? Two pertinent questions that remain unanswered.
BTW... Billions is a great series. If you have Showtime on your cable channel - check it out. Giamatti's wife in this series is seriously hot, and a bonafide sex freak. LOL... Maggie Siff - she's pretty hot. Excellent acting, excellent plot, through 6 episodes of the maiden season anyway.