I've only been able to play for hourlong windows here and there. The opening is damn slow. Also, I personally found some of the writing for the massive expo-dump that you receive upon reaching the not-Citadel to be pretty awful, and not just the meme-worthy stuff like "My face is tired" either (and the lackluster facial animations, which are exactly as bad as people said, don't help matters much).
Take "Now you know why they call it the Scourge". Who calls it the Scourge? Did Nexus crew just suddenly take to calling the dark matter massive area denial weapon they ran into by "the Scourge"? Why would they do that? It's a name that is considerably more religious or mythological than what you'd expect the technologically inclined Council race species to adopt. And it's not particularly descriptive compared to something like "The Web" or "The Net" (or even "The Anomaly"). Or give it a colloquial term like "Darkweb", that understandably is derived "that dark matter web in space". Contrast with "the Citadel" from the original trilogy, which seems much more appropriate when it comes to how people might have started calling the massive alien space station used as a capital for the galaxy's largest polity (in their own languages).
There's also "Exiles". "Exiles" are exiles, lower-case "e", but referring to them as a homogenous bloc with capital E Exiles just really bugs me.
And, I'm really annoyed at the fact that Overload, which I use to strip shields, is a detonator instead of a primer, but Incinerate, which doesn't work on shielded enemies, is a primer and not a detonator. And there doesn't seem to be any Combat primer, which is pretty bullshit.
All that said, I slapped a scope on an Avenger (don't have any Beryllium for a Cyclone, how are those by the way?) and am now having a lot more fun gunning down not-Covenant and not-Forerunners by the platoon. And I think I've passed most of the more egregious "How do you still have this in your game after $40M US and a 5 year dev cycle" bullshit, so it can only get better from here right?