"They should not have done the prequels, especially given the change in tone (towards myth, etc.). The franchise has essentially been about aliens vs. humans, and should have stayed that way. The writers, etc., kept imagining turning the background story into something like 2001, and it's not working."
I couldn't have said it better. I preferred the questions in Alien to remain a mystery, it made everything much more creepy. Answers are good, and sometimes necessary, but the questions posed in Prometheus were just kind of boring. The novel for covenant was a fun enough read, but it definitely made up my mind to wait for home-vid release of the movie. I do believe there are some franchises where following the original formula is the best way to go. I personally love the Alien franchise for it's simplicity, aliens hunting people on a spaceship or abandoned outpost. You know you're going to have some good monster action and it's just a fun ol' time. Not every series has to be some deep philosophical Christopher Nolan fest.
I'll just say that the covenant novel actually did make Prometheus seem better. And I'm afraid as long as they're doing prequels here, there's going to be a lot of that. The next film will make the previous one look better, but that just means a steady decline in quality. If covenant doesn't put the franchise in hypersleep for another 20 years, Fox seriously needs to consider taking the franchise back to its roots. If it ain't broke, don't fix it. I watched the avp movies and resurrection again 3 days ago, and at least they gave me what I was looking for, predators and aliens. I actually found them quite fun. Wow, never thought I'd say that.