I doubt very much that they chose a woman just because. It's logical - why limit the possible Doctors to only half the population? That's dumb.
The doctors regeneration has always been part choice. It's subconscious, but every regeneration so far has had a 'trigger' something that made them go from X to Y.
It's highlighted best in the change to Capaldi when he's explaining his new appearance, and asking why this face, then he's happy to be scottish, he can get mad now.
Basically, the subtext is that hes spent so much time being a loon as Smith, thatit's time to get serious (as Capaldi).
It's possible they ignore the subtext of the regeration this time, not every whovian has noticed the 'triggers' for the doctors next regen, but if they do follow the last few methods, I'll be curious what makes Capaldi want to be a chick.
It's just a shame this change has come at a time when Transgender favoring, and (incorrectly understood) feminism is at an all time high........
Edited by Master_Scythe, 19 July 2017 - 09:13 AM.