Bond was never going to be a woman. A woman got the 007 designation in the last film, because Bond "retired" (or some such thing).
The key elements of Bond's persona are that he is male, caucasian, British, a loner, drinks too much, and is relatively capable of a number of skills from flying a plane to always being in shape to run down the bad guys while wearing a top notch suit. Plus he beds women.
He is an exxagerated version of Sir Ian Fleming.
And he always should be.
