UPDATE - September 17th, 2024
I've now added an "unweighted trend line", colored according to the long or short direction, which can be used in conjunction with the "weighted trend line" (also just called the "trend line"). This provides the ability to do crossovers between the unweighted and weighted trend lines, in the same way that a MACD crossover trading strategy works.
The idea behind the unweighted trend line is that it's intended to be a true average of the differences between the base and short, base and medium, and base and long moving averages. The weighted trend line, however, is the same calculation, but weighted by a "trend factor" that scales it up or down accordingly.
When the weighted and unweighted trend lines cross over each other, they denote a shift in various moving average beyond what is considered "normal" price movement.