Amy's previous movie podcast, The Canon, already did Alien vs Aliens. The former (rightly) won. James Cameron's sequel to Alien was akin to the sequel script he wrote for First Blood: dumber & action-ized. The characters in Alien resemble real people just doing their job, they don't spout catch-phrases. I will acknowledge it's not an especially fun/enjoyable movie. It's a horror movie with an unstoppable rape-metaphor at the center of it, and committing to that means it's bleak. Carpenter's version of The Thing was able to borrow from this film, but it's still its own thing which has spawned all manner of offshoots & imitators. And that much of that is due to the set design isn't a mark against the film, because it's not as if that doesn't count.
To me one of the great things about the original is that it's NOT obvious that Ripley is going to be the one to survive to the end. They're all potential victims, with none appearing to have any "plot armor".
MAD Magazine makes fun of every big movie.
The James Bond series has gone on for much longer than Alien. Marvel could as well, but with multiple films per year that would be more demanding. The pace might slow down over time.