The thing for me is, despite having a female Doctor I feel like the last few series have had much less of a female focus than RTD or Moffat series. Under the previous showrunners, yes we had a male Doctor but every series was largely about one specific female companion and the story of how the Doctor impacted her life, for good or bad. We've lost that recently - I feel like I know so little about Yaz apart from being really really keen on travelling with the Doctor. There was more focus on Ryan and Graham's relationship, making series 11 and 12 feel in some ways even more male-focussed than usual! I would really love for the show to go back to the male Doctor / female companion dynamic and give us another strong companion story to get invested in, like we had with Rose, Martha, Donna, Amy, Clara and Bill.
Edit to add: there is another Doctor Who thread in the TV section, perhaps the two threads could be merged?