[quote=@Rougespartan181]
20 crew... Of what size? 20 huge spaghetti monsters, or 20 tiny rabbit-cyborgs?
[/quote]

Rabbit cyborgs need a [i]lot[/i] of room to roam, plus there's the whole issue of engineering bay space required for performing the maintenance required to keep their robotic parts in good working order. Not to mention the fact that tiny rabbit cyborgs have a tendency to breed like, well, tiny augmented rabbits.