There wasn't a hybrid reference this episode was there? Unless I missed it.
You know, I'm fairly sure that line was written in there when Doctor Scientist-Man said he could hear them (and probably figured out why too), but Capabaldi didn't say it or something.
We did have 'abomination' (aversion of the natural order, in this case sleep) and a reference to the classics (Morpheus, and that mini-rant in the cold storage room) though. That could have been Gatiss thinking he was being clever.
On the whole, I was already thrown out one minute in when the 'non sleeping guy' goes "oh, that must mean the power is on" and the door, that just opened for them, closes behind them. OF COURSE THE POWER IS FUCKING ON, YOU *beep*
I have to say the character of 474 interested me a lot more than everyone else, including the "protagonist" who wasn't the actual protagonist. You know, this was basically a lot of known ideas / tropes stuck together to pretend it's new. It wasn't overly boring like the previous two-parter, but mediocre in a different way. Like setting up a non-user and not paying that off (which presumably was meant for a second part, a la the earlier Before the Flood, but scratched for a singular episode). It was just weird and overly mean (kind of 'bad writer' calling card, in my opinion) to have him be saved and then just waste him.
Btw, this also had both a good consistent moment, where the separated marine has to speak into the mic and there is an effective shot of the Putties moving into the room, as well as a really bad inconsistent follow-up, where said private is then suddenly attacked after using his Dead Space Rig (tm) which doesn't actually make sound, unlike the private speaking into the mic. Just going with "BUT THAT DON'T MAKE SENSE" is not going to cut it in terms of writing, but it is a basic "can get away with it" thing. It's not fun when the viewer knows well in advance he's being 'had' though. In general, you don't want viewers to see through your bullshit until well after they've seen it.
Speaking of which: point rifle at Putty, don't shoot the Putty? Sweet Jesus, Power Ranger Syndrome is contagious! Get to the Tardis! THIS DON'T MAKE SENSE!
Let's just go somewhere else and all.
He forgot to kill off the 'Asian' commander at the end too. So that's going to be awkward, you know, bigger on the inside, and oh hey, half the solar system just died. Whoops.
*rewinds recording*
edit: wait, what the hell? SHE JUST FUCKING DISAPPEARS? Ahahahahahaha. No, no, that's alright, nobody will ever notice. (she's there, then distortion, she's gone). Maybe Capabaldi really was just commenting on the script?