I absolutely agree with you. However, political spectrum as a concept, as you answered, does not really make sense and even if you made one that did it would be overly complicated. The way I created it is something akin of a progressive-regressive line, with more progressive ideologies being left, and more regressive being on the right. I think that is a suitable definition of left-right divide if there even is one. You have to satisfy yourself with one form of representation and with its pros and cons.