Leo has produced other films in which he did not appear (The Assassination of Richard Nixon, Gardener of Eden) and already has a very full plate of upcoming projects. Still, it's fun to speculate because Fleming was such a fascinating character.
According to Wikipedia, Fleming was a journalist first, including time in Moscow in 1933, then a stockbroker, before working in Naval Intelligence for Britain during World War II. He personally directed an intelligence-gathering unit that employed "lock-picking, safe-cracking, forms of unarmed combat, and other techniques and skills." He published his first Bond novel, Casino Royale, in 1953. Stevenson's script started on the eve of Fleming's wedding in 1952 before flashing back to his years as a journalist, playboy and spy planner.
Fleming sounds like it could be a good, thrilling drama. What do you think? Could Leo pull off the part? If not, who would you like to see as Ian Fleming?