Meanwhile, Cybermen are stomping around London (again) and nobody seems to mind?
Also, 3W apparently advertises their services to the public, but Clara has never heard of them. Theory: They're in the future. Everybody from this time knows about 3W and is used to seeing Cybermen on the streets.
Another alternate twist on
Spare Parts? Rather than Upgrading to Cyber Parts in life, Missy has organized a
Spare Parts kind of scheme, where the deceased's consciousnesses are being transferred into Cyber-Bodies, so the Public can interact with their deceased loved ones? Therefore they are accustomed to the regular appearances of the Cybermen, like in the Pete's World 2-Parter?
I hope Missy isn't just a one shot. Since who we've been dealing with all season is MISI (The last "I" is Interface, so, if it went wrong ratings-wise, there was an out, that The Master may not even look like Missy or be female. I hope they bring her back in the future as the current incarnation of The Master