I'm not very knowledgeable about some of the game's finer points -- can somebody give a quick primer on "pod activation"? Like I get the gist of how it works, but why is it even a thing?
Why don't the aliens just patrol around the map or stand guard at important locations, and then if they see you on their turn they jump into cover and shoot? I don't understand why they need different mechanics than the player.
Aliens patrol in groups out in the open and only get their full AI abilities once they've "activated" (by seeing one of your soldiers). On activation they get a free move (whether its in the middle of your turn or during theirs) to get into cover but they are unable to shoot or carry out most other special actions until their next turn (aliens that don't need cover can use the free action to overwatch).
Presumably the 2-action/cover/overwatch/unit abilities systems make it pretty much impossible to create an X-Com-like AI that is always active and independent. At least I can't think of a way that doesn't have gaping holes. But once the AI is active it operates under similar mechanics to the player (it still works like original X-Com though in that if it can see one of your soldiers it knows where all of them are).
Just think, if the AI wasn't in cover you'd kill it. How does it know what cover to take prior to battle, without cheating and reading the player's position? And even if you do solve this, does it just stand around overwatching? That makes it suicide for the early game and just forces players to use lightning reflexes to scout everywhere later.