I don’t even know how to summarize my Thoughts on this, so I probably will keep it brief:
I can see why people would like it, but personally I really didn’t.

It was a lot of Building Up, which by itself isn’t bad, but it was done in such a Manner, that really didn’t click with me. Lots of Exposition (even a line about it stating that!) and sadly not enjoyable Exposition.

Archie Panjabi was great, but neither her nor Dobson really felt like the Rani to me. The whole Characterization for those two felt a bit off at times. I am not saying they have to feel like O’Mara’s Rani, but there was something a bit lacking. I also didn’t like the entire flirtatious Scene with the Doctor and her. Doesn’t scream like the Rani to me at all.

I thought the entire Concept about this Reality created with Conrads Mind was an interesting one. For the most Part, I have hardly any Complaints with it. What was done worked, outside of maybe a few odd Scenes here and there.

I hated the amount of Flashbacks, some of which I get. Some others just felt unnecessary, like did we really need had to have Flashbacks to Poppy or the Vindicator? I don’t think so.

The CGI was hit-and-miss. Some Moments with it worked. Others didn’t.

Was nice seeing Rogue again.

I really didn’t like the entire opening, it just felt a bit off to me? And really didn’t work for the Character of the Rani.

The whole Bit about Omega just felt out of nowhere and honestly? Why? Don’t get me wrong, I love Omega, so a tease like that will always get me interested, but I feel like he is yet another Part of an already very packed finale Episode. Who knows if he even appears, I wouldn’t be surprised if that gets stopped before it happens.

The Set Design was great. Be it that Bone-castle of the Rani(s) or the Redesign of the UNIT Place.

Cool of them to use a BF Line in an Episode, no Idea about the Context, but hey sure what the heck, it was cool! 

The Pacing was a bit all over the Place for me, some Scenes really didn’t get along nicely with each other. Overall, probably my least favorite Episode of this season so far. Again I can see why some would really like it, but it rather leaves me cold. Lots of great Ideas or Things here, just not Things that I think go particularly well together.