We haven't seen anything of the backstory
They implied things about the fall of human civilisation in the first trailer (and I think a little in the story trailer from just before E3 this year?), but I don't know why you're expecting backstory from story trailers anyway. Doesn't seem like a particularly reasonable request.
we haven't seen any human settlements
Not properly, no. But then, they seem to be focusing on world-building and interacting/fighting with the machines, which I'd guess predominantly takes place outside of human settlements
we haven't seen any proper NPC interactions
We have seen a brief conversation mid-quest. They're focusing on action in their gameplay demos, so I'm not surprised they're not showing much of this stuff. And remember, they've still got at least two major events to show off the game as well as six months of marketing.
we haven't seen any other locale than the plains
We have seen them, but that's not where the gameplay demos have taken place.
we haven't seen any sidequest play out which they talked about.
You seem to want to see the entire game before release. It's not reasonable to expect to see every single individual element in pre-release footage. So far we've seen a gameplay demo of combat against smaller enemies and then a bigger 'boss' enemy, a story trailer and then the most recent E3 demo showing what is obviously a quest beginning outside of a settlement, which shows how dialogue plays out, resource gathering, combat against a couple of different enemies, getting a mount, riding to a location and then a boss battle, showing how Aloy uses the mount mid-battle. There's a lot of stuff in there which is shown briefly, provided the viewer isn't doing their best to ignore it.
For me, Horizon hasn't impressed me in any way, artstyle included. It comes across as Zelda-Lite/ Monster Hunter-Lite. When I say art-style I really mean the lack of one. When I look at videos I see impressive tech, but not much to really latch onto in terms of actual style. I know people are really into the game and that's fine, but I'm just not seeing it myself.
You might not like the art style, but it's foolish to say the game doesn't have one.
The game looks good and all, but I hope they'll fix the facial animations, if they haven't already. That conversation during the E3 demo was downright creepy.
Yeah; the voice acting, body animations and facial animations were definitely the weakest part of that trailer. I'm pretty sure they've already said they will be working on improving this though.
It's the fact that this game tries to convince me this happened as an evolution of life that i find it silly not the designs themselves.
If the these robot dinos were created by someone or something i wouldn't have a problem.But as an evolution of life i just find it silly.
I'm pretty sure that was never inferred, and Aloy finding out what happened to the old human civilisation and how these robot creatures came about seems to be the game's premise.
I'm pretty sure one of the trailers implied exactly that.
Should be easy to find then, as there's only been a few trailers.