My Alien: Covenant Headcanon

How did David engineer xenomorph eggs without first having a queen?
Maybe his experiments with Shaw and the black bio-fluid first resulted in the production of a xenomorph queen, thus the eggs came after. Naturally, David wouldn't lead a potential victim into a room to show off the queen, all that was required was a human getting exposed to a facehugger.


How did David know what the fluid did, what it could be used for, and how his attack on the engineers could be orchestrated?
As the film Arrival explores, there is a logic and structure to how any language evolves and is formed. Therefore, it stands to reason that David, a highly advanced machine, would be able to quickly learn essentially any language he encounters, as evident by Prometheus. The ship he and Shaw piloted seemed to be focused around the black fluid, so perhaps David learned all about it while exploring information available on the ship.


Why wasn't the wreckage of the Prometheus explored, if the Weyland corporation knew where it was?
Don't trust the Weyland corporation! We see the events of the film through the perspective of the ships crew, but one only has to look back at any other Alien film to see that many Weyland employees are kept very much in the dark.


Why did David kill the engineers?
David was disturbed. He was designed to adapt and create things and was challenged to do so by his creator, Peter Weyland. David hated his creator and considered him unworthy of what he created. There are two reasons for David's murder spree: 1 - He hated the engineers for creating Weyland. If he saw his creator as unworthy, perhaps this passed over to the engineers in David's eyes. 2 - Before David could feel free to create as he pleased, he had to usurp that which he viewed as god, The Engineers, as they created his creator, are as far up the ladder as he is aware. By destroying the greatest known creators, he felt better then them and viewed himself as god, and thus was able to begin his work creating and engineering life.




Ultimately, I believe that A: C succeeded as a prequel for the same reason I believe, despite it's flaws, Rogue One succeeds: it goes back and does something that changes how you view something important for the rest of the series, effecting it and improving upon it somehow.

Something oft complained about in the Star Wars universe was the ease with which the first death star was destroyed. Rogue took this problem and engineered it into something logical and nearly-mind-blowing.

A: C takes some minor questions from the original Alien, such as why the xenomorphs are so humanoid (even having a human skull beneath the "face" of the original costume), and why they seem to be the perfectly designed creatures specific to killing HUMANS. The film explains that David, an android with the world's biggest hate-on for the human race, is the very thing that engineered the xenomorphs in the first place!

And while there are still many questions left unanswered, especially from the film's ending, I have faith that the next film in the series will continue to make the story richer and perhaps finally connect satisfyingly to Alien, completing the circle.