This is very interesting. I had NO idea that there was such a thing as QFE.
As far as that scenario about descending to 3000ft, I don't see how that is still practiced in the world. It seems like it is a deadly scenario. I'd probably kill myself if I went over there and did that. Why wouldn't other countries just convert to a system like we have? Isn't it less about technology and more about just general practice?
Do those countries still have a transitional altitude like 18,000ft?