Incredibly creative concept and genius presentation!
I'm curious, how briefly do you see days 5-2 playing out at the table? It seems like the most player choice potential comes around days 1 and 0 when the players have pieced things together a bit.
The days can be played really short. The complete adventure can be played as a oneshot. It can be longer, if you add more social interactions and dramas with other npcs.
Cool, that's how I was sort of imagining it. Awesome stuff! This is going on my long backlog of Mothership one-shots that I simply have to run at some point haha