Even those Enlightened have distortion?

[anagogy]

It has nothing at all to do with crystalization and everything to do with minimum balance.

What is crystallization if not balance? Ra appears to use them interchangeably.

Also, I think we have different understandings of what sub-densities are. I see sub-densities as the portion of a true color density that can express itself within our current true color. So one existing at the seventh subdensity is vibrating in the wholeness or knowingness of their 3rd density beingness. As Ra says, "The activation, while in yellow ray, of violet-ray intelligent infinity is a passport to the next octave of experience." So the 7th subdensity constitutes a kind of conscious contact with intelligent infinity. Or, as I interpret it, as much contact with intelligent infinity as the "3rd density lens" allows, which, as you noted, allows for the possibility of no longer incarnating in 3rd density if that is one's desire.

I assume they are using "octave" in the sense of "the next density" in this particular context.