1. What does a crew do?
2. Can you have multiple ships with some commanded by Ai?
3. Can you start colonies and build an empire populated by NPCs?
4. Why do you enjoy the game?
1. Crew does nothing, they are an unfinished feature that serves zero purpose
2. Yes, they are very buggy and broken but technically you can
3. You cannot populate your empire with NPCs but you can build a colony for roleplay purposes
4. Im a bit hit and miss on this game, but I have started to dislike more as the community got smaller and updates began ruining the game for me more and more.
I myself do not recommend you buy this game, watch the steam stats for signs the community has stopped dying and read both the positive and negative reviews on steam until you think the game is in a good state. Currently I would avoid this game but it may get better.