My honest prediction is the "biological" side of the game might be more static than we want at the beginning. Maybe that gets improved with patches and expansions. I think expecting Witcher 3 style lore/depth when it comes to living things you interact with probably isn't realistic
Who knows though. As I've said before (sorry if I sound like a broken record) the base exploration mechanic is what had me sold day 1 and will be more than enough for me personally.
I was talkin to my boy Bolt about this game and basically I told him my opinion is this game just won't be for everyone. I bet some people play for 3 hours and never go back but other people will play for 3 years.

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