2) Quick nitpick: When the kid asked Spock about the lightyear numbers, I was fully expecting Spock to come up with an exact numerical figure. It totally took me out of the story when he said "roughly 50K". Say what?
I was a little surprised as well. Ususally TOS made a point of Spock giving numerical answers down to at least a decimal point.
3) I've been FULLY expecting SNW to retcon Pike's fate in The Cage, and this episode did something I'd been expecting. Pike's fate is actually part and parcel of his and Arola's involvement in this episode. At the end of his revelation to her, I had a distinct feeling that they're setting up a future retcon by giving Pike the idea of a possible alternative future -- the ability of this society to cure ANY disease coupled with her not-so-subtle invitation to him to STAY with them (not just then but IN THE FUTURE) made me think that THIS was the alternative arrangement that Pike might just be mulling.... and then ALL of it was ruined (for him) by the end and what she did and how he took it. THAT, in my head, was the actual twist.
That is an interesting takeaway.
