Covenant's idea of having the Alien designed by David actually makes sense, since the facehugger appears to be primarily designed to infect humanoid creatures. David hates humans, David makes special monstrosity human killer. This is a tie in that makes sense.
I am neutral to Covenant, I don't love it, but I don't hate it either.
It's the fact that it was tied into hot garbage that was Prometheus that irks my sensibilities. That was very much a blatantly half assed attempt to find a tie that binds from decades old what ifs, and wouldn't it be cool fan speculation without even attempting to weave any kind of cohesive narrative.
When Prometheus stole AvPs briefing scene and said that they got star maps off of a cave painting I couldn't believe I was watching an actual Alien tie in movie and not some kind of direct to home video release. "There is only one star system out there that fits what we are saying on that cave painting." Bullshit. How can you tell what kind of scale you would be using on a f**kING CAVE PAINTING. Without a point a reference one of the drawings could be a star dozens of light years closer and not part of the system at all. They could be supergiants, they could be red dwarfs. It is ridiculous.
I dislike Prometheus because it did ask a bunch of questions that didn't need answers, didn't actually answer anything, and was incomprehensible convoluted garbage. The mystery goo that was the focal point of everything wasn't even explained in the movie, it has only really been covered to any sort of degree that makes sense in the EU.
Yes! We are the same as the giant aliens in Prometheus!? Can uh, someone show me the pigment for blue skin, and the 10' height in my dna though? Might be handy for an nba career. It doesn't matter who, but whoever thought in a storyboard session that making the engineers 10' tall doctor manhattans was a good idea needs to be hit in the throat. Because that TOTALLY fits in with the rest of the franchise.
I was in Prometheus because of the trailers, which were top notch, but absolutely hated the movie itself. They should have went with NEW IDEAS. Which seems like it is absolutely impossible for the franchise to do.
We have how many trips to Acheron now? Aliens, Aliens: Newts Tale, that one AvP comic tie in, that one Aliens novel tie in, Aliens Colonial Marines, and Alien Isolation. More I'm sure I'm forgetting.
The Alien franchise has went down that path of never moving the story forward because writers and developers are either creatively bankrupt OR afraid to take chances and instead continually get hung up on the "big unanswered mysteries," of the franchise which were almost always small unimportant anecdotes.
And yes, OTHER franchises are as guilty, SW and Rogue One immediately spring to mind, but Rogue One is so much more watchable than Prometheus because they made an entire plot, characters, and actors to fit around the idea, instead of throwing some barebones shit on top of already continually rehashed ideas with a madman egoist helming it.
If we never get another prequel I will rest easy, and while at times it doesn't look like the franchise will be nuked on a reboot, the longer inactivity goes on, the more the possibility rises.