Alien fans aren't the only ones still clamoring for another sequel, Sigourney Weaver seems to be on your side as well.
Speaking at the Hero Complex film festival, Weaver spoke to an audience about what a possible 5th installment of the franchise may look like:
Had we done a fifth one, I don't doubt that her humanity would have prevailed. … I do feel like there is more story to tell.
But Weaver remains adamant in her stance that the film should not take place on Earth, according to the LA Times:
The actress earned laughs when she said she didn't think a new "Alien" sequel could take place on Earth, with the Alien "popping out of a haystack" somewhere in the "French countryside."
But, in all, she's hopeful and remains open to the possibility of doing the film, if and when it should come together:
I feel a longing from fans for the story to be finished. I could imagine a situation where we finish telling the story.