xhonzi said:
Therefore, different M - she just happens to be played by the same actress.
Is that more likely than "new Bond, same M"?
I guess that depends on whether or not you believe the fan-theory that "James Bond" is a legacy title in-universe, given to different agents. If that's the case, then it very well could be "new Bond, same M."
But if James Bond is just a person and just one person, then that has to be a different M as well.