I agree with the graphics point, it looks plasticy and blurry to hell. But that could be Nvidia forcing them to use the horrible DLSS which just blurs up the picture.
As for the world, I'm sure it will be vast and amazing, let's not forget, they made the surrounding area of kaer morhen liteally just a walking zone to enjoy the land. Barely anything in it, no real purpose, just to add to the world. They could have easily gone with just the castle for the cutscenes and dialogue. But they wanted the player to at least venture out into the lands where Geralt grew up.
I've faith in CDPR, they are the good guys, I think the pressure is getting to them a little as this is easily going to be one of the biggest releases this decade. And as a result, they are under the biggest spotlight right now.