Here's an example: you could have an annunciator tied to flaps which could be triggered by a general electrical failure, a Vfe overspeed (flap-off) or a flap actuator failure that goes ON if the event pertains to any of the flaps. There is no easy way to model this.

I'm talking about sequential events in that one failure triggers other events, not something that necessarily works on a per frame cycle. Here's another example: the brake button/annunciator/light. Setting the light ON when Parking brakes aren't completely off is easy. But you might want it to go ON too if you have a left or right brake failure, tire failure, landing gear failure, or even general hydraulic failure.

When I make suggestions as in this post, I get the feeling I'm preaching to an empty hall. Care to comment? Who looks after this side of the sim?

vonhinx

Consider a takeoff technique which can be performed successfully 999 times out of 1000. If every airliner used this technique, there would be thousands of airline passengers killed every day in the United States alone. And yet you could sit there all day in front of X-Plane using this maneuver and never see anything go wrong. It will look perfectly safe and easy to you and yet be far beyond the bounds of acceptable safety in real life.

It's very easy in X-Plane to perform a maneuver that is safe most of the time, but in real life the standards are vastly higher.