Alien Revelations - WIP synopsis

I am currently collating a synopsis, which I will then expand into a screenplay for an Alien semi-sequel. There will be two main elements to the narrative structure... 1. The main story telling of a Weyland-Yutani R&D vessel landing on LV-426. Officially, they are there to ascertain the cause and damage caused by the destroyed Atmosphere Processor. Unofficially they are there to ascertain if the Derelict was affected, and if not to acquire the specimens they so desire. 2. Flashbacks experienced by the captain (whose identity will be revealed later on in the story) of all the key events and factors that have happened up to this point in time (2179), and factors that will have an effect on events yet to occur (Alien Resurrection). Regards point one, I will reveal that as we go along, but regards point two, maybe you all can help. I'll start things off... 1. Why the USCSS Nostromo was chosen for the mission to carry out Special Order 937. 2. The why and how of the Nostromo's science officer being replaced with Ash while the vessel is docked at Thedus. Now over to you guys...