I would love to see an extended cut of Covenant. I usually like the extended cuts of the movies I get on Blu-ray more than the cinema version because of the added detail. I do like the extended cuts of the Alien movies on Blu-ray compared to the cinema versions, especially the extended cut for Aliens.
As much as I loved Covenant, even I felt the third act felt rushed. I understand the economic pressure from the studio to get the movie to about 2 hours. However, it then falls to the director and writers, I feel, to craft a story that won't feel rushed in that 2 hours.
A lot of people have complained that outside of Tennessee, Daniels, and Oram, they didn't really get too invested in the other crew members. I've been thinking about that ever since seeing Covenant. I realize that the original Alien was a fairly simple affair, especially when compared to the scope of the other movies. However, the crew of the Nostromo was only 7. Covenant's crew was I think 15, including the original captain and we all know how that turned out. Prometheus was basically the same thing, people all over the place. I know this wouldn't solve all of the problems that people have stated they have with Covenant. However, less people means less time needed to give everyone screen time, which hopefully means a tighter story and much better pacing.