The FRC seems similar to the GD with one exception,
Microposopus includes Malkuth. This can be seen in Waite's
familiar illustration. In the FRC Practicus Ritual he describes a diagram which sounds like it's based on this illustration. Vau corresponds to the "Divine Son" (a.k.a.
Microposopus) so logically Vau would encompass everything from Daath to Malkuth:
"Kether is called the place of God and His Shekinah in the state of absolute Union; but the procession of the Great Law brought them forth in a state of distinction, which is not to be understood as separation. They became in this manner the Abba, or Father, in Chokmah and the Great Mother, Aima, who is the transcendent Shekinah in Binah, corresponding respectively to the letters Yod and He of the Divine Name. These are male and female, and they produced—as the fruit of their union—a Divine Son, who is shewn in the Diagram extended on the Sephirotic Cross. His head rests upon Daath, which is Supernal Knowledge; the arms stretch to Chesed and Geburah, while Tiphereth is over the region of the heart; and that which in the purity of the Secret Tradition is termed an organ of holiness is veiled by the Sephira Yesod. The feet of the figure rest on Malkuth, to indicate that the Kingdom of this world is in subjection to the Kingdom of Heaven. Among the letters of the Divine Name, this Divine Son is in correspondence with Vau."
From what I've been able to infer from the rituals, the Sephiroth Daath to Malkuth represent different aspects of
Microposopus, so I guess Vau would correspond to them all in different ways.
In reading through some of this material again I stumbled onto something interesting that I missed before. Netzach, Hod, Yesod and Malkuth correspond to Yod, He, Vau and He respectively and represent the First and Second Orders. The Third Order, summarized in Tiphareth, is represented by Shin and completes the name Yeheshuah, or Christ. The First and Second Order initiations represent a "restoration" of the Divine Name, while the Portal represents a new birth in Spirit. For example from the Portal Ritual:
"Guide of the Paths: Master of the Portal, I testify that the Postulant has traversed all the paths and dwelt in all the Sephiroth of the First and Second Orders; that the Divine Name Yod, He, Vau, He has been restored in a sacrament within him; that with the zeal of his whole being he looks towards the Second Birth and the sacred letter of the spirit which completes the Divine Name. He bears it on the Cosmic Cross, which is the Badge of his Admission."
and
"The word of the Portal is Yeheshuah, which is at once a Divine Name in the personal and universal sense, signifying the Christ manifest in life and time, and the cosmic Christ. It is formed by placing the sacred letter Shin in the centre of the four letters Yod, He, Vau, He, which are read by us as Jehovah. You know that these letters are inscribed on the laminae of the Officers in the worlds of symbolism through which you have passed, under the obedience of the Rosy Cross. They signify the purified state of the four parts of personality, to which the Officers correspond. The Third Order is concerned with the quest and attainment of that state which is symbolized by the letter Shin. Therefore, this sacred letter is emblazoned in the centre of the rose on the Rosy Cross which I bear. I invest you with the corresponding jewel of the Third Order."
I'm not sure if this is similar in the GD Portal Ritual, I know Waite cribbed a lot of their material for his own rituals. It's interesting to note in light of this the letters of the Name YHVH on the breast of Waite's Temperance card, Temperance being the card corresponding in the GD to the 25th Path, that of the Portal.
*I think what I'll do is move Vau back to Daath and put Shin in Tiphareth. Though not exactly precise, it'll be a good working model.
**From
The Secret Doctrine in Israel, toward the end of Ch. 3:
"The reference to Yesod shows that the Lesser Form is extended through the Lower Sephiroth. It is the Begotten Son or Vau whose place we have been seeking on the Tree; and as its name is Daath or Knowledge, being a semi-Sephira which represents the junction point of the influences flowing from Chokmah and Binah, the inference is that the Lesser Countenance or Head is located there, while the feet are situated in Malkuth, as later Kabalism affirms."
This is from Kabbalistic literature and not Waite himself, but it seems to be the view he adopted. A distinction is made between the Lesser Countenance (Head) and Lesser Form (body).