You may know that the electronic spreadsheet is one of the two "killer apps" (the other being the word processing app) that transformed the digital landscape. Through the 1970's, the microcomputer was little more than a hobbyist's pastime. It was Visicalc and Wordstar that turned the microcomputer into the personal computer, broke down barriers of scale, and changed everything. To liken OPMS to Visicalc is high praise indeed, for OPMS, and a testament to its analytical powers.
On the other hand, you are an educator with a keen interest in improving, if not transforming, education. Never mind your words, your very presence in Math-Teach attests to that.
Given your keen interest, and given a powerful tool at your disposal, how can you resist throwing yourself into OPMS and constructing Action Plans? Frankly, I would think you should want to conduct OPMS sessions with your colleagues, immediately if not sooner.
Your nonchalant dismissal of OPMS, "I lack the time..." is incomprehensible to me. Is your interest in improving education really not that keen, or is your confidence in OPMS really not that deep?