Oh, this is exactly the kind of story I've been looking for! I love this exploration of what else might have changed as a result of the timeline shift.

And Spock Prime, who knows so much, should be able to warn about things that could happen as they did originally, independent of changed political landscapes. I like very much how this encounter, that he could have noted later, as it originally occurred later, changes as an indirect result of the Nerada's destruction of Vulcan.

Seeing M'Benga choose a different path in life as a result of the attack on the Kelvin, another change that works well here.