I just (re)saw the Apollo 13 movie, and I wondered… What do you think about random (but fixable) system failures? Parts of the vessel could just fail (with a chosen frequency -> from “none†to “who the **** hired those mecanics ?â€Â) and have to be fixed manually, a bit like the actual wheels repairing system. Parts of the vessel could be associated with a system panel, with green/red lights, or directly on the stage informations on the left. Failures could be shown on it, needing an intervention. Some parts could be more fragile, or robust (understand : the probability of failure could be more or less important). Do you remember the ammonia leak that occurred during Chris Hadfield’s mission on ISS, that’s what I’m talking about. Engines, RCS, reaction wheels, or solar panel failures, leaks, that kind of stuff. This could force us to maintain our space stations, for exemple, or add a difficulty level to the game. During the lift-off, a critical failure could just abord the mission (and justify the use of, for exemple, escape systems. This way, a escape rocket (like the ones which were in use on Apollo missions) could be a part idea.