Interesting, useful, and straightforward. Perhaps the mini-artifacts could be adjusted to be stronger at the beginning and weaker at the end? By the way, what does the name stand for? I'm guessing it's "Least balance enhancement," how close am I to the answer? :)
The idea is interesting. In fact, some artifacts could be made stronger. It's also possible to change the characteristics of composite artifacts (reduce some, increase others). For example, the composite artifact of the Dragon could be slightly weakened, as there is a clear imbalance.