Non-fatal AU ideas
I'm just sharing some ideas I have for Alien AUs that don't have the aspects of canon xenomorphs that turn me off, like the gore and the fatality.
One idea I have is for a universe where humanity has engineered a tame version of xenomorphs. The fully-grown xenomorphs protect humans from regular xenomorphs and they reproduce in a way that's not fatal to their hosts, like by having huggers put an egg/embryo up the host's vagina and into their uterus, where it develops until it's ready and then crawls or gets birthed back out the same way it came in instead of bursting. I haven't chosen a name for these modified xenomorphs, but the fertile huggers would of course be pussyhuggers. Maybe there would also be sterile huggers made for recreational purposes.
My other idea is a universe where xenomorphs evolved to use their hosts in a non-fatal way because of the benefits of being able to reuse their hosts. They're still predatory creatures, though, capturing humans and dragging them back to their hives to be repeatedly bred.
What do you think?