Never been a big Alien fan as most of the series is predicated on jump scares, but I'm a huge Predator fan. Even the bad entries have always entertained(AVP2 excluded). Prey was great and Killer of Killers was really good too. Excited about Badlands. It looks like the series are overlapping again.
Alien would be a top 10 movie for me even if you edited out the scariest parts. My favorite parts are just the take on industrial space business, the set, performances, the music, the ominous future corporate villain. The beloved sequel, while fun and I get why many love it, is not aging nearly as well as the original. I put Alien more in the same basket as 2001 but it happens to have horror elements.
There are near limitless plot lines for Predator "in time" like they did with Prey and Killer of Killers. Hope they don't overdo it but so many. Ancient egypt, ancient rome, feudal japan, colonial America, WW2, Vietnam, in the future where humans are lazy slugs like in Wall-E but predators hunt us against our AI robo-protectors. It could go forever.