I have art on my phone of Darth Vader and Storm Troopers fighting Xenomorph Aliens from like 12 years ago or more. I don't if there was actually a crossover comic when both franchises were part of Dark Horse Comics, but since they're all owned by Disney now, that would be badass to see, but will probably never happen...

The one thing I always ed that stood out in the novels was where one of the books seems to start in the future with advanced technologies, flying vehicles, ect, but it's actually revealed to be the past while in Rands vision. I haven't read the novels in over 20 years, but this episode was definitely the one I've been waiting for. Was that Rhuiden in the novel?

There's alot I from the novels that has changed in the show, but they're each their own beasts and as long as you can keep an open mind about changes being made, you can still enjoy the show, because it's absolutely amazing.

Almost every single earth based Predator comic was a standalone story. The ones that did connect were typically set in space with the protagonist either tracking or being tracked by the Predator species or part of the Alien/Predator series. Standalone movies I think would be the best shot at keeping people interested in the franchise. Throwing in a trophy from a past hunt would also be a great jumping off point to the next movie to have the connection that makes it feel like a sequel but it's really not. Just open ended story telling in a wider universe.