Since everybody arguing against this not being canon is completely dodging my point, allow me to say it once more, with feeling.
Super facehuggers: Allows one drone and one queen embryo to have separate hosts.
Queen is fully developed at birth due to being a queen embryo. Can be hatched as last resort by the queen (I.E the Sulaco). I guess it can be hatched without an egg sac. Ask Fincher.
Molting: Gradual process of the development of a
dominant Xenomorph molting to a queen. Includes xenomorph finding ways of making new aliens before fully developing to a queen.
What about egg morphing seen in the special cut of Alien? Egg morphing was deleted for the 1979 theatrical release of Alien, and Ridley considers that the true and best version.
This is coming from the director of Alien. Yeah.
Why didn't the queen regurgitate to create drones in A:R, and why didn't they know it could? It was a fully developed queen. Born from a true bred queen by coming out of Ripley 8's chest, it was born to begin the egg creating process because of the life development stage at birth. In recorded encounters with xenomorphs, this process of a drone becoming a queen was never found out because of the conditions in which they were established in.
If in Aliens a drone did become a queen, the colonists weren't alive to tell them, and didn't know what the hell was killing them anyway. So therefor, the scientists in A:R didn't know all of the xenomorphs reproductive methods, because they didn't witness it, and didn't have a xenomorph trying to become a queen.
Why did aliens try to kill Scar even though he had an embryo? Paul W.S Anderson.
I doubt any alien would kill a person with an embryo inside them, let alone a predalien embryo. Simply put, AvP doesn't make a lot of sense.
A stretch would say perhaps they couldn't detect it because of its fusion of alien and predator DNA. If the super face hugger can be created by queens, whats the point of drones becoming queens and them using regurgitation? Now, hear me out on this one. A3's Assembly Cut is an amazing movie. But both cuts have one of the biggest series plot holes in movie history:
A queen hatching an egg, without a sac, in an area she never went to, and on a ship orbiting the planet she had reproductive means on. Plain cut, non opinionated answer. Seriously. This idea was created for the single purpose to somehow have a third alien with the same lead character. If the setup was fine and it was understood how the egg got there, sure, but no reasons or explanations are to be found. Why should we let one movie's mistake shape the evolution and new ideas of the series? It shouldn't.
I think thats everything.
It's perfectly cool to have your opinion on if you like the idea or not, but I hope I was able to explain or show that this idea of aliens morphing and molting to queen status is completely not contradicting the canon of the series. Thank you for reading, and I can't wait to be flamed.
Good night!