To paraphrase Elizabeth Sandifer, this is Doctor Who finally making the true connection it was always destined to between gay culture and postmodernism. The result is Iris Wildthyme. Iris Wildthyme is the single greatest character to be introduced into the Doctor Who universe (whatever that is). She is the great feminist reinterpreter of patriarchal Gallifrey. She does embody the endless polymorphous perversity of time and possibility. And Doctor Who is all the better for it.

And if that's your kind of thing, then give this one a read... and anything else Magrs has written. This isn't even his best work.

Anything else I would say here has been beaten by this fantastic review: https://tardis.guide/reviews/story-the-scarlet-empress/quartz_/