I have no doubt what you describe will work. One can divide the ladder rungs into various fractions and over time it will work. Adding the component of the proportioned lines into the mix provides a finer tuned ladder and the other benefits I've described.
If you feel your method is the best, then it will work for you as you believe in it. The investor/trader has to believe in their method as the best as it suites their ideas about the markets. I happen to prefer using the proportioned LRC as it hits the swing points and defines the ranges the best. That to me is most important as I like the precision. The computer draws the lines, I just follow along. ;)