Took a lot longer than planned, but finally watched it on BBC3 tonight. I felt it was ok, pretty good for an Xmas episode, good stuff
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If I was a weirdo fan who reads too much into everything (which actually I am sometimes) I could say:
Hmm - when the Doctor "awoke" and "almost nearly awoke" he seemed to be lying next to a volcano on a rock ledge, in front of the TARDIS rather like the scene with Clara and the TARDIS keys when she put herself into a dreamstate accidentally thinking that actually she was awake and she had put the Doctor to sleep ...
i would also say - the Doctor told 62++++ yr old Clara - "they must have attacked me first and then found you by my memory and " .. so hence their must be connections to each other somehow ...
And also .. They spent an overly loooong time focusing on blonde lady after she came back to reality - why did we need to see her reaction + her list (or Daves' list ot her ...)
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However, sometimes I'm boringly simple and so I could say:
Hmm, they must have filmed the Doctor waking scenes on the same day as the TARDIS keys in lava scene, must not wanted to have wasted the set
Hmm, they found people who lived normal lives, some had disabilities but all of them felt comfortable with the idea of being exploring scientists at the North Pole
Blonde lady was fun, I liked her, glad they included a bit of her life story at the end
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Bring on Series 9. Nice to see Capaldi still has a bit of a mean steak (prepared to walk away and leave them all to die when he thought they were already dead anyway) but also has a bit of a clown in him (I'm flying the sleigh!)
OK, thats my random spewing of thoughts all over the place ......
p.s. Natalie Gumede was great
p.p.s. Shona works in a shop. Now if Moffat hadn't already explained that Missy gave Clara the phone number, then having it that Shona becomes a companion, has adventures and then meets past Clara in her shop and giving her a pc helpline number would have been very timey whimey

But can't happen now ....