I was just pretending an emergency in the A319 (dual engine failure) and I used a lot of braking, it showed up “BRAKES HOT”. But nothing really does happen. This kinda goes with the earlier thread I made a while back about failures, but this I think would be simpler to add. This could also possibly add more ground crew vehicles (Ambulances, Firetrucks, or any other ground crew vehicle that deals with emergencies in some way)
I know this would be more for the A320 family of planes because of their better simulated hydraulic systems.