My problem is not that the Doctor becomes a female per se, it is more a worry that the show will change severely, if they do not plan to do some drastic changes with the gender change, why did they do it in the first place? If they stress the change too much, I doubt I will be interested that much. It is the same if they decided to make it more teen oriented like Class which was nothing for me... This has become one of my favourite shows and I fear it may be over soon, either for me or due to not enough viewers... I may be completely off here, which would make me happy