That's a lot of effort for a fake trailer. Still that was quite good. It made me want to see a film that wasn't even made. "I MUST SEE THE REST!" I kept thinking.
The plot for that would actually make for an interesting story. A couple of low-level Weyland-Yutani workers find themselves trapped in some facility/space station were a botched xenomorph experiment took place. The story could serve as a means of delivering information about the company through the perspective of the workers. That could easily be the plot of a future novel.