It'd be really weird if this supposedly big budget game doesn't have features that lots of smaller or older games have. It doesn't even need to be a super complex lighting system with ray tracing or cool weather effects like The Witcher 3 were trees would sway in the wind from a storm, but give us *something* to make the world not feel so static. Perhaps this is something we'll see down the line.
Exactly. Solasta with 17 people was able to do it.
Solasta isn't a good example since its a very liner game and i dont remember the game having any special benefits during night time aside from cosmetic. Larian could probably do it within a few weeks or less, the big extras are the scripting of 100's of NPC during nights time, than we would expect new events and quests that's why they aren't doing it in my opinion.