Whether or not you know your harmony, or can play well, or can improvise, or can write wonderful compositions, isn't actually the issue. You are proposing a system for teaching harmony theory (tonal harmony) and you are offering it to teachers. How is it that these teachers are teaching it right now? Do they have a need for the system that you are proposing? Does that system actually teach harmony, and does it do so in a comprehensive manner? Or does it give a map of how chords relate to each other in harmony? If so, can a teacher use that map? Does your system address an existing need?
I am not finished my studies, but am not a a complete beginner either. I looked at some of the sections that correspond to what I know and have used. It takes things that are familiar and straightforward, and makes them seem complicated, almost scary. I can see at a glance what the beginner material is trying to teach because it is so familiar at this point. I would not want to work like that. I would also much rather be at the piano or even singing, doing explorations, rather than clicking on a virtual piano.