I voted good.
There are lots of things to enjoy about this episode - and lots of things to dislike about it too.
And series 8 as a whole for that matter.
I liked:
the little bouquets to the fans
the use of UNIT
the (all too) brief reappearance of Osgood
the Cybermen climbing all over the plane
the Doctor skydiving to the falling TARDIS
Missy/Master (performance and motivation)
Danny (performance, likeable character)
Clara (performance, but not a likeable character)
The Doctor (performance, but not a likeable character)
I disliked:
the central notion of resurrecting the recent and long dead as Cybermen (an attempt to exploit the recent popularity of zombie flicks?)
the killing of Osgood (she sort of represented fans for me)
The Doctor's passivity
The distortion of characters to fit plot (Clara especially)
Plot details that don't make sense (Missy's coming and going; convenient lapse of that to allow dead Danny to make a dramatic sacrifice)
I think the direction for series 8 has been wrong.
In a family show, I want the lead heroes to be likeable. I want them to be troubled by dilemmas, yes, occasionally by self doubt, yes. But I don't want the whole focus of the show to become to too edgy and obsessed with moral ambiguity. It seems obvious, but Doctor Who is not an adult drama, it's a family drama. And in a family show I want the leads to be good role models. Doctor Who has not been that for the majority of this series for my taste.