I can't agree with you that NOTHING changed after the RMI accident - subsequently there was a very real awareness amongst Ansett crews (at the very least) that if the cabin blower overheat light came on you only had a very limited amount of time to get on the ground.
When I said nothing really changed I meant that would have prevented the loss of RMI.
Again, I can't quite agree. From my admittedly highly fallible memory of the report into the Winton accident (I'd be happy to be corrected here), the crew initiated an emergency descent on the basis of a visible fire and that then they were unable to feather the engine (control runs had burnt through). If they ever had an engine fire warning it came much later (the fire started behind the area of the fire detecting loops), and because they didn't have what you damningly call the "pretty light" by the time they were aware they had a problem they were (very sadly) probably already doomed.