I love the idea of some kind of food manufacture machine that takes protein strings and carbohydrates to recombine into different foods.
I see ships being more utilitarian than star trek. Simple corridors with some passages with simple mesh grating and walls so you can see conduits and stuff, but proper bulk heads on main decks.
Crew quarters should be comfortable but small, perhaps how they are on a naval vessel, with lower ranks sharing a two bunk cabin, but senior officers doubled up on smaller ships or single quarters on larger ships. Solari started cominy up with such ideas and his posts mention sharing a room with another officer.
