I liked it! My girlfriend was groaning when they referenced “the audience”, but I thought it was done well– though perhaps one more mention of it and it would have felt annoying to me too. But I love Michelle Gomez’s performance, and I love that she gets so many funny lines.
I do wish that Missy would stop being written so over the top, though. Doing an accent in one episode would be fun, but so many of her sets have her doing different voices and it’s getting a bit old. And getting a bit… well, they’re treating her like the Quirky Woman Master ™. And I do wish they’d stop doing that. Give her a proper storyline! She can do more than just be funny and try out accents.
Also, the fact that it was a “Dark Gallifrey” episode… really changed nothing. I thought it would be darker, have a bit more of a storyline, but it just feels like Another Missy Episode. There was no point in this being a different set, aside from that it seems each episode will be linked rather than Missy getting the usual “each episode is pretty much standalone” treatment. I’m glad she gets a slight overarching storyline, at least.