Re: And the title of the Gaiman episode is...
So, just to theorise, could this be a Dalek/Power of the Daleks style story, with one apparently powerless Cyberman prisoner/survivor playing nice or being tortured, but actually it's been setting up production lines and converting people all over the place? The brief was, after all, 'To Make Them Scary Again'...
That is Moffat's shtick, not Gaiman's.
"Everything should be made as simple as possible, but no simpler." -- Albert Einstein