Managed to avoid any spoilers for this, and went in to watch it last night. Loved it. Loki & Heimdall were obvious choices for deaths, and I, along with many others, called those ages ago, although I admit, there was a second or two where I thought Loki was going to join Thanos (again).
My singular quibble with that scene though; Valkyrie & Korg? Later in the film we're explicitly told that Scott & Clint are (essentially) under house arrest, but there's no mention of Valkyrie or Korg anywhere ~ we don't see their bodies either, so did Thanos kill them, or did they leave that ship prior to Thanos arriving? The scene (in Ragnarok) had Thanos arrive when Loki & Thor were talking, so I'm wondering whether Korg, Valkyrie and a few other Asgardians had left before hand? It's the only logical sense.
It further seems evident to me that the sequel will be more cosmic, and I'm assuming that Captain Marvel is off world, thus the reason she hasn't appeared up until now - she's had no need to be an Avenger. There would have been some irony though (from Fury's POV) if Captain Marvel was one of the people erased from existence.
But yeah, loved the film, just enough elements of humour, and there were some badass scenes; Thor stole some of those, as did Banner, and well, to be honest, I genuienly think all of the main players had their time to shine, as did the minor characters such as Bucky, Rocket, Falcon & Rhodes. The opening scene/fight between Strange, Stark & Spidey was excellent too.
The scenes between Tasha, Sam & Rogers against Corvus & Proxima didn't bother me too much either having witnessed how they went down. I guess it goes without saying also that the deaths which occurred prior to the finger click will stick (so that's Xandar - which I'm a bit bummed about not having seen), Asgard and a whole bunch of Wakandans are dead.
Vision is a tricky one because he's an Android, and I feel it would be too early to kill him off permanently, however if he was done and dusted, I wouldn't be surprised if that stuck. I can't remotely believe that they're going to keep Gamora dead though; I have a sneaky suspicion that Nebula will give her life for her sister somehow. I don't really think there's much left for the Nebula character outside of Guardians - unless she joins them in honour of Gamora or something.
And Strange sacrificing that stone to save Stark? I guess the only way to actually defeat Thanos required him to first win? There's no logic to that move otherwise.