So, saw the episode. It's overall solid, but I'm left bugged at the ending aspects. E.g.
-So Rassilon was always Maester Luwin, even in Day of the Doctor. I thought that more or less established them as separate individuals.
-The prophecy states that the hybrid will stand in the ruins of Galifrey. Which is what the Doctor, Ashildr, and Clara all do. It feels like they're still pushing the mystery when they don't need to. Whoever, or whatever the hybrid is, the prophecy's come to pass. They've stood in Galifrey's ruins.
-Likewise, I dislike how they seem to be dragging Ashildr and Clara's story out. This is subjective, but Clara accepting her death rather than taking "the long way round" would be far more satisfactory to me, rather than some convoluted reason as to why one has to forget the other. Likewise, Ashildr. I like her character, but the idea of her accepting the end of her life at the end of the universe feels far more thematically appropriate to me than her escaping it, no doubt to be brought back later. Yes, I realize that both of these are the theme of accepting death (maybe I'm just feeling morbid), but the whole second TARDIS thing feels like a copout. River's been accused of being too like the Doctor. We haven't heard anything from Jenny who's also exploring space, if not time. And now we have Clara and Ashildr doing the same thing.
-On the plus side, finally we get the sonic screwdriver back.
Overall, season's been solid, probably the best of Moffet's run. The Twelfth Doctor's certainly clicked with me, and I'm left to reflect how Eleven never did.
