I thought it was awesome. I wondered weeks ago if that was who she was, but didn't expect they actually would go there. I was pleasantly surprised when it turned out to be true.

Pretty sure they did it to mess with the minds of those who have been demanding a woman be cast as the next Doctor. "Well, how about a female Master instead?" I can totally see them cackling evilly over this idea when they came up with it. ;)

Of course this begs the question of how the Master managed to escape from Gallifrey (where he presumably ended up the last time we saw him) when it got hidden away in another universe. My theory at this time is that it has to do with that business on Trenzalore: the signal from the Time Lords wanting to come through may, in fact, have just been him.

Even the Doctor's extended life cycle granted him by the Time Lords may have been the Master's doing. After all, he is known to have once said, "A cosmos without the Doctor scarcely bears thinking about." That would sure be an interesting twist . . .

Teaming up with the Cybermen is a very Roger Delgado thing to have done, and the warped notion of 'heaven' seen in this episode was creepifying as all hell. "Don't cremate me," indeed. Yikes!