Interesting question indeed. But do you know what'd be even more interesting? Whether JB'd still exist in a world where WW2 goes very different. No matter whether the Nazis survive, Stalin wins bigger, or the western Allies end up controlling more territory.
- Would Ian Fleming still write champagne-flavored spy fiction? Could well be.
- Would Hollywood
Less probable: Whether his hero would still be named James Bond (sure, he chose it because the name is so unconspicuous, but since this depended on him finding a book by the ornithologist with that name, it's far from sure); and whether Sean Connery would play him in a movie.
Of course, these two Ifs would already destroy JB for many fans...