While much of Doctor Who fandom appears to be celebrating the news that Russell T Davies is returning as showrunner, I have to say that I am very much less than thrilled.
Yes, Chris Chibnall's era has had its problems, and I think that Jodie Whittaker's Doctor has often been underserved by the material she's been given to work with. Also, the whole Timeless Child thing is utterly wtf and I'm mostly just pretending it didn't happen, on the grounds that it's the kind of thing that's bound to end up getting unhappened sooner or later. However, I've loved the conscious effort to increase the diversity of the series, and have enjoyed the way he's taken the opportunity to explore smaller stories. Not everything has to be about the fate of the entire universe.
For me, Steven Moffat's version of the show was the best. Yes, he also had his problems (though I disagree entirely with the people who claim that all his depictions of women are misogynistic), but his Doctor Who is as magical as I remember Doctor Who being when I was a child.
Russell T Davies, on the other hand...while I am, obviously, very grateful to him for bringing back the show, I can't forget the way just about every woman over the age of 30 in the whole of his era of the show was portrayed in a negative light, and middle-aged women always seemed to turn out to be evil. Or the recurrent fatphobia. Or the way one female companion got given a "happy ending" consisting of a human Doctor lookalike she'd only just met, because appearances are everything. And another female companion got randomly married off to the only other Black main character in the series. And Donna Noble, the most amazing woman in the universe, had all her glory and character growth undone. (And I was never very keen on the huge Total Bollocks Overdrive Earth-in-peril stories which marked the RTD era. I prefer a bit of subtlety, and the possibility of pretending that I'm still young enough to believe that it might all be really happening, somewhere out there.)
So definitely less than thrilled.