Now in the game, crash only happens if you hit the ground.
But crash can also happen if there is too much g force or over speed. I think the game should add this. Crash will happen if overspeed or have large g force for a long time. This means the plane will break up in the air. Maybe the engine or wings will rip off.
Now there is a overspeed violation but at high altitude there is no rule in real life that planes cannot go fast. So there should not be a violation, it should be crash. Same when there is high g force.
The warning should come on, and after 20 seconds, like the violation, if you do not stop the plane will break up and you crash.