Yes, I think I'm in basic agreement with most of what you've said. Judaism in particular seems to have a deeper understanding of the Divine Mystery than many species of Christianity. This is why I "object" (as if anyone cares!) to the Trinity being presented as an ontological reality and litmus test. As "a way to get your head around the Divine Mystery," I have no quibble - except that this is then used to explain other doctrines that you MUST believe and treat as ontological certainties.But isn't this what orthodox Judaism and Christianity has always said? We may have to tear up your Heretics club membership card.
God, after He spoke long ago to the fathers in the prophets in many portions and in many ways, in these last days has spoken to us in His Son, whom He appointed heir of all things, through whom He also made the world. And He is the radiance of His glory and the exact representation of His nature... (Hebrews 1:1-3a)
God can only be known through what He revealed through the prophets and through Jesus. This assumes that Jesus was one of those "emanations" (is an emanation like a hypostasis?) and that whatever it was the Prophets encountered was also an emanation. That's about as orthodox as you can get. (But the guardians of Orthodoxy need to protect their territory; hence the Cessationist doctrine. No more nocturnal emanations, thank you very much.)
(I left my Heretics Club card in my golf pants and my wife ran through the washer, so at the moment they won't admit me to any of the meetings.)