I don't want a female Doctor.
If you want a female Doctor, you have to have a female James Bond too.
No, I don't. For starters, Bond can't regenerate, he can only change actors. They had to reboot the series just to make him blond.
Besides, with Bond, it's an important part of the character to be a male chauvinist and ladykiller. He's basically a male adolescent power fantasy. It's who and what he is. The Doctor, on the other hand, has been asexual in most of his incarnations, he's definitely no ladykiller, and I actually find no character trait of him that defines him as a particularly male character.
Last, but not least, James is a really stupid name for a woman.