Great decision if they can get him. Dr Strange is not the most popular or well known of characters outside of comic fandom, so attatching someone as popular as Benedict would be a canny move by Marvel. A good proportion of fairer sex would trek along just to see him, so it would be a great way to grow the box office appeal. Plus theres a darker edge and vocal tone to him that lends itself well to the character. Given how many of the older Marvel actors are probably going to run out of contract and sequels soon I think its a very clever casting decision. i