When I was a TA I had all my students going for major approach run through our "Death File" at least once or twice (twice to see or show improvement, not passing). It wasn't required but I used it as a learning guide to FNO level traffic. We also had a file called "fix the mess". That file contained targets that were not sequence, etc. I'm sure we all have been put in situations during an FNO where a controller in the next sector froze up, lost connection, rage quit or a combination of the three. I think its important to understand both concepts and be able to dig your sector out of a hole when the time comes.
The "death file", or whatever you want to call it, shouldn't be used to degrade the students and I'm sure ZMP and the rest of ARTCCs aren't using it as such. For those of you who are using it as such then you are clearly using it wrong. I always told my students "this isn't passable try your best and let's not forget the basic fundamentals you were taught just because you are slammed". Then Id run them through the file the next week and show them their improvements.
So at the end of the day, I think these files are great if used the correct way!
If we’re going to wring our hands about how to improve events, we can’t blame it all on the pilots.