I realize noone will see this for decades to come, but where is the Silurain resurfacing episode! It was Chibnalls idea in this episode and it would be awesome to see now that he is showrunner, in the same way Moffat set up idea’s like River Song before his run of the show.
At the end of this episode an alarm is set for the year 3020, that will wake up all the Silurain’s from there sleep. Given that “the great catastrophe” that caused earths abandonment apparently also happens in the early 31st century, the 2 of those events together could create an incredibly interesting story.
If Chibnall is still showrunner next season I hope we see this happen!