1. Add Dynamic Food Stores throughout the entire ship. Cubby holes and open spaces can be filled with fresh fruit and other food stores when you head out on the mission. 1 week into mission all bananas are gone, 2 weeks into mission all other fruit is gone.. each week that passes more and more food items vanish. Refit and it resets to a full stock.
2. Add asbestos coating to only hot pipes.
3. Smooth out the angular edges to all pipes, gauges and flanges.
4. Add small Nazi propaganda sayings or symbols above every doorway. Everyone looks at these before they duck down and it's a good way to keep your sailors brainwashed.. um.. I mean motivated and focused.