Well with the dread of the series finale on the horizon, I am nevertheless really enjoying most of season 4 so far. The Vulcan trilogy was great. Reminded me of DS9 Bajoran arcs a bit. And great to flesh out the backstory of the Vulcans (and explain some of the less appealing aspects of Vulcan society we've seen so far on this series). But I think it is actually really good to have this sense of progress on Vulcan. It's not only humans who grow and change their culture over time - Vulcans aren't a static society, they seem to have rediscovered the Kir'Shara and evolved culturally into the Vulcans we meet in Spock's day. Good 'backstorying'.