I’m aware it isn’t designed to be a sandbox, I’m just betting that the typical exploiter wouldn’t target wine past writing stuff into mounted filesystems. So at most they’d wreck the proton prefix and perhaps spawn a few processes within it.

Is it really a problem that they want to stay faithful to the original game? You say it yourself that FIRS is available as an option for people who want something more advanced to work with, along with all the other NewGRFs.

Less that, more just going over to the side to let faster vehicles pass and then continuing on. It is just common courtesy to everyone else driving faster vehicles, and is at least something taught to do in Swedish driving schools.