For example, the "soviet" system was a bottom up democratic system where labor unions effectively formed the foundation. There was a lot of thought into how the system was formed and even the CIA admitted Stalin was more of a team captain than a dictator. Hell you can get a lot of interesting tidbits into declassified reports on the Soviet Union. There's the famous one about how the soviets were better fed than their American counterparts, despite the claims of breadlines.
It's really quite sad that we are basically not allowed to learn from the positive aspects of these projects.
For example, people hate on Stalin a lot, but his 5-year plans were so wildly productive and successful, even a young South Korea deep in a western backed dictatorship copied the idea in order to boot strap their industrial base. China continues to use this idea, the simple method of setting goals in the short, medium, and long term in order to use resources effectively.