I think a cool idea for a Ship Theme would be "Infirmary", where there'd be blood splotches on the walls, few body bags here and there, but the real idea for it is: Actual Humans Standing around. Well, not standing, Mostly sitting against a wall holding various bodyparts that are bandaged up with blood stains, and a wheelchair too. But they'd be looking around, shifting their arm a bit, just acting like injured people.
Basically, I just want Ship Themes that have people here. They wouldn't do anything, just be purely cosmetic. But starting a game and walking to your various battle stations while seeing a few engineers crouching, do some welding on the walls would be so cool.