I just re-read the sixth, and I think they should have had more time actually interacting, because it still seemed pretty sudden.
A thousand times "no!"
World War Z's greatest benefit was how down-to-earth it was, and how much it grounded itself in reality an plausibility. If anything, there should be next to no CGI, and all the cities and what should be understated. The whole book is set up as an oral history! this is going to be a very talky movie, and all the better for it.
If they had any brains, they'd film it as a documentary with about as much gloss as the History channel. Less when you think about where the author would get the fiming equipment.
Also, it's nice to be able to lean on hundreds of years of literature trying to make sense of the damned thing.
Also, also, in my house growing up, The Bible was considered the only way a Christian could come to know God, which is different than the divinely inspired word of God. I always took it as: "Some people had experiences that we believe connected them to the being behind all of the universe. This is what they wrote to describe them." That doesn't preclude lies, metaphor, or misconceptions. As anyone who's had any spiritual experiences knows, it's hella hard to describe exactly how they happened.
Also, evolution has resulted in much crazier designs than most people could imagine. Pistol Shrimp? You're also falling into an anthropocentric fallacy. The only kind of intelligence or civilization that counts is one that's similar to ours.
There is a parable about a man who had never met a woman. When he finally did, he was amazed at how similar they were and how capable the woman was. He was upset because he had thought he was the greatest kind of thing in the world. And then he realized something.
He went back to his friends and said to them: "Women are almost equal to us, but they can never something we can do: see their faces. Since we have an ability they lack, we are clearly superior." It never occured to him that he couldn't see his own face, and the woman could.
A. The evolutionary pressures probably wouldn't be the same.
B. There isn't really an intelligence niche, i.e. it's probably a freak occurrence that large-craniumed problem solving apes survived. Big brains have proven to be a less advantageous adaptation than thick skins, horns, or wings.
But it's as good an explanation as any. Now, if you could only explain to me why, if all the humanoid species in Star Trek were nudged to that shape from all sorts of evolutionary backgrounds, why do so many of them lactate?
Also, in the de-evolution episode with Barclay's Syndrome, they claimed that human beings had spider DNA in them. wtf?
And the fact that they have a twin race known as Remans, and the Romulan sigil is that of an Eagle clutching two planets: Romulus and Remus.
AND that they were preceded by a similar, yet arguably less aggressive society that focused on philosophy, i.e. the Vulcans.