I would really like to hire NPC crew members to simply sit in the co-pilots seat and look nice. ... maybe look at me when I look at them and possibly wink at me
However, I used to play another space game where you could hire NPC crew (or AI crew iow), that would enhance performance of the ship. (i.e., an engineer may improve FSD boot up speed, or a science officer who honks each system for you and can extend scan range, etc.) Nothing that would make a ship OP compared to a similar ship w/o an AI crew but minor improvements.
Imho, it would be fun if you could Holo-you a crew's appearance. That would make those long journeys not quite so lonely.
Just a thought