The problem is that you can't do much beyond the template that the first movie did: stranded crew trapped with lone monster in tight spaces. Even ALIENS followed the format of the first film pretty closely. I've always been a bigger fan of the first film over the second because, despite their popularity, I always thought the Marines took away from what made the alien scary. It made it seem like anything else; it could be stopped with a gun and bullets. So each time it comes back, it needs to be bigger and badder. The core horrors of the creature dilutes with each iteration. The larger the world of ALIEN, the more has to be down to circle it back to what made the creature work in the first place: stranded crew trapped with lone monster.
It's unfortunate that it's stuck to that singular format but it's been proven anything else outside of that sucks.