Went yesterday with Sam's little bro. He hadn't seen it yet, and I was interested to see how it played out knowing everything.
There are still a few issues — Glaive must have a cloaking device or something, considering how often he stabs people (with others around, often facing the victim) — and an article from Polygon was in my head the entire time: if Thanos is all-powerful with the Gauntlet, why erase half the universe's population instead of simply increasing the amount of resources? It accomplishes the same thing.
Also, his inconsistent stance on killing: it's unclear if half of the Asgardian ship's population was spared (it seems to have been), but how was that determined? If the people we saw in that scene were meant to be eliminated — Heimdall, Loki, Thor, Hulk — why do the latter two escape the cull? Or Stark for that matter.
I'm fine with Cap surviving a direct to-the-face punch from a five-stoned Gauntlet. I'm also fine with the rag-tag Titan group nearly being able to remove the glove, but Hulk getting his ass handed to him early on. If we believe Thanos has a level of self-doubt, even sub-consciously, then he could be varying his effort based off the task at hand.
That said, the mo-cap work from Brolin is so impressive. I found myself even more empathetic to him and Gamora the second go-round: her ugly-cry scene when she believes she killed Thanos confirms a complicated relationship.
The deaths got me more this time around, even knowing most of them will probably be reversed. Tom Holland's (ad-libbed!) scene is the top one, but even Rocket watching Groot go (again) and Cap/Bucky were good. Also, when it's all done, Widow looks devastated.
I'm also a little confused about the post-credits. I don't know who Fury and Hill are working for ("Control"), but the timing isn't clear either. Hill talks about multiple energy signatures over Wakanda, which implies the start of the fight, but then people almost immediately start disappearing. I get that the snap could've been what she was talking about, but wouldn't that be a huge single instance? I also figure the snap rewound time at least a bit (though maybe not locally around the Gauntlet, given Thanos and Thor are still in the same spot).
Really, no idea how A4 will kick off. Which is exciting.