If you are so inclined you can read a bit of fanfic called 'The Third Cyber War' that I wrote for Cosmic Masque (issue 15).
SPOILERS:
I'd rewatched Nightmare in Silver and felt confused by the idea of the Cybermen being so mighty as to require the destruction of a whole galaxy, so I wanted to address that. Also I was wanting to see Jodie Whittaker get a scene where she just effortlessly won, just wandered brazenly into a room and upended the power dynamic as if she was ordering a coffee. Because I felt like that wasn't going to happen on TV any time soon I should just write it.