IME, if one doesn't understand and, more importantly honor, the necessity of the Guru, lineage, and transmission, there's simply no way one can have a true experiential understanding of Dzogchen (as opposed to a mere intellectual understanding of Dzogchen). The true experience of Dzogchen is due to the Guru's blessing/grace. Not only is the Guru the source of the true experience of Dzogchen, it is also the Guru who confirms that we have, indeed, had that correct experience. "All that glitters is not gold," and it is so, so easy to make an honest mistake and wander down the wrong path. To think that one can dispense with the Guru, lineage, and transmission and that one can and should streamline and secularize Dzogchen for the "modern" world is, to me, a clear indication that the person has not yet had the real experience.
I say this because I thought for years (as in pretty much a decade) that I had understood Dzogchen, thinking much the same things as our friend Jax. (Happily, I did not share my views with others or set myself up as a Dzogchen guru.) I had more than 20 years fairly rigorous practice behind me, my Teacher had died, I practiced threk-chod, said yig-gya whenever I was not doing something else, and thought that was that. It wasn't until an old Dharma bro talked me into attending a retreat with a bona fide Tibetan Dzogchen Teacher that I realized I had been deluding myself. I was drunk at the time and, therefore, I said sure, what the heck? Returning from that retreat, I returned to formal practice. While I am still only "knocking at the gate," I've gained enough experience since then to know now that what I had thought was accomplishment and the end of the journey was merely intellectual understanding. I can only thank my good karma that I didn't set myself up as a Dzogchen Guru and delude others as well as myself.
In any case, Jax, I'm praying for you. I recognize only too personally where you're coming from. I haven't chimed in before to this thread because I wanted to be sure you are mistaken. I now feel quite sure about that. If you feel totally confident that you are A) on the right track and B) are qualified to be teaching Dzogchen, please go and present your understanding and
experience to a recognized Master within the lineage, for instance H.H. the Dalai Lama, H.H. Sakya Trizin, the Druk Gyalwang, Dodrupchen Rinpoche, Garchen Rinpoche, Ayang Rinpoche, or Yangthang Rinpoche -- someone of that caliber and authority. If they sign off on you, great. However, I doubt very much that that will be the case.
Good luck and best wishes.