It's a different way of looking at progression (when time constrained) than what is outlined above. Sometimes you get caught up in the trees and miss the forest. This can be especially easy to do when you're bogged down in factory design.
Give it a shot, and let me know what you think. I think you'll find that it certainly makes you look at achievements like there is no spoon quite differently from a progression curve and effort required perspective.
What I found when using it was that what was a struggle (time wise) before, became quite simpler and straightforward as it prioritized what is important. Until you actually try it, however, it's probably hard to appreciate what I'm saying.
Place to discuss the game balance, recipes, health, enemies mining etc.