I really, really loved this movie. It doesn't quite knock Winter Soldier off its perch as my favourite MCU movie, but it's right up there. The worldbuilding was beautiful, I absolutely loved the beginning and the imagery showing how Wakanda came into being. Great touch having it be Erik and his dad and not T'Challa and his - in hindsight it's heartbreaking to imagine Erik wanting to hear the story about 'home' again.
Interesting discussion above about how it was made to seem a bit as if the depletion of Africa was just something that *happened* to it - it wasn't something I noticed when I watched it, but you're right, that chafes now that I think about it. A lot more focus was placed on how Wakanda could've intervened than how the rest of the world could've seen what they/we were doing and put a stop to it. It shouldn't have been up to Wakanda to begin with.
Out of everything I think the South Korea sequence was my favourite part. It was brilliantly shot and played - the reason Winter Soldier is my favourite MCU movie is that it's sort of a spy thriller with superheroes, and this sequence felt like that, too. Andy Serkis was clearly having the time of his life in this role (almost a shame to lose him), Okoye fighting, Nakia fighting... All brilliant. And the crowd roared at the end when Nakia came gliding down the street still sitting in the driver's seat. (And speaking of which, the women in this movie. I adored them all.)
Michael B Jordan was brilliant (I still can't believe he's Wallace from the Wire all grown up) and his delivery of his last line was poignant, but... At the same time I was like, buddy, you're comparing the plight and fate of innocent people sent to slavery with yourself being sent to prison (presumably) for attempting to become a dictator and kill a whole lot of people.