Ok! Great to finally see the last of the series!
The silhouette is a nice full circle homage to that first poster, and the pyramid and train line I got on a second take! At first i thought it was just a triangle shape representing light but that figure snuck in afterwards and I realized what it was, very good eye trick!
The one thing I miss in this is River song, because it's her wedding and she's the one who stopped time. Possibly could have had her replace the faces with her one and the eyepatch with what we saw way back when they released part 2 season 6 trailer and everyone wondered what could be happening.
Anyway this was a great series. My top favorites favorites are the Impossible Astronaut, the Almost People, and Night Terrors