thanks for the question,
lets get educated. answer, "DIVERSITY". Jesus is the Holy Ghost "
shared" in Flesh. scripture, Philippians 2:6 "Who, being in the
form of God, thought it not robbery to be
equal with God:" not equal "to" God, but "EQUAL ... WITH ... God, big difference.
see that word "
Form" here in the verse, it's the Greek word,
G3444 μορφή morphe (mor-fee') n.
1. form.
2. (intrinsically) fundamental nature.
[perhaps from the base of G3313 (through the idea of adjustment of parts)]
KJV: form
Root(s): G3313
notice definition #2. JESUS is the SAME "EQUAL" NATURE, "Spirit", according to John 4:24a. but there is one problem, God said that there is no one "EQUAL" WITH HIM, lets check the record. Isaiah 40:25 "To whom then will ye liken me,
or shall I be equal? saith the Holy One." or this one, Isaiah 46:5 "To whom will ye liken me,
and make me equal, and compare me, that we may be like?"
now if JESUS is "EQUAL"
with God as Phil 2:6 states, then either A. JESUS LIED, God forbid, or B. GOD lied, God forbid. as to be "EQUAL" with. so we know JESUS who is GOD don't lie, and we know the Spirit who is God don't Lie, so we conclude that what is written is TRUE. now the question, "HOW IS THE LORD JESUS "EQUAL"
WITH AND YET BE IN FLESH AT THE SAME TIME" (a pre sneak answer, G243 Allos... :) but I'll get to that later on).
well the answer is in the ROOT of the word G3444 μορφή morphe which means God's NATURE. and it's the Greek word,
G3313 μέρος meros (me'-ros) n. which means,
1. a portion (i.e. an amount allotted, a part of something).
2. a part.
3. (as an adverb) partly, in part.
4. (as a participle) participating (i.e. the act of taking part in).
5. a piece (i.e. a limited portion).
6. (of location) a district.
7. (of livelihood) an occupation (i.e. as ones' portion in life).
8. a portion in Jesus (see John 13:8).
{literally or figuratively, in a wide application}
[from an obsolete but more primary form of μείρομαι mȇírȏmai “to get as a section or allotment”]
KJV: behalf, course, coast, craft, particular (+ -ly), part (+ -ly), piece, portion, respect, side, some sort(-what
1. a portion (i.e. an amount allotted, a part of something).
since we know that God is not a "part" .. Echad, nor is he a piece of himself as definitions 2 & 5 states. for if he was, he would be a two God person and that's anti bible. so the answer lay in definition #1. portion. Truther, do you know what portion means? another word that is synonyms with portion is the word "SHARE" BINGO, by being the "EQUAL" SHARE of himself, or as you like to say.. HIM.. self... HIMself in flesh this eliminated any three person thing, and any distiction thing, and it also allow God to be in flesh... G2758 κενόω kenoo like us as Philippians 2:8 states, "And being found in fashion as a man, he humbled himself, and became obedient unto death, even the death of the cross." now "LIKE" us he can be filled with his OWN, his, OWN, HIS OWN Spirit that he is diversified from. Just as we are to be filled because he is our example... Oh how easy it is to explain.
and it also answer your other question "how much human nature is melded into the Spirit of God today...50/50, 80/20, ...?". your answer to you, NONE, it was all done away with at the resurrection. listen,
1 Corinthians 15:35 "But some man will say, How are the dead raised up? and with what body do they come?"
1 Corinthians 15:36 "Thou fool, that which thou sowest is not quickened, except it die:"
1 Corinthians 15:37 "And that which thou sowest, thou sowest not that body that shall be, but bare grain, it may chance of wheat, or of some other grain:"
1 Corinthians 15:38 "But God giveth it a body as it hath pleased him, and to every seed his own body." (READ THAT AGAIN)
1 Corinthians 15:39 "All flesh is not the same flesh: but there is one kind of flesh of men, another flesh of beasts, another of fishes, and another of birds."
1 Corinthians 15:40 "There are also celestial bodies, and bodies terrestrial: but the glory of the celestial is one, and the glory of the terrestrial is another." BINGO.
1 Corinthians 15:41 "There is one glory of the sun, and another glory of the moon, and another glory of the stars: for one star differeth from another star in glory."
1 Corinthians 15:42 "So also is the resurrection of the dead. It is sown in corruption; it is raised in incorruption:" BINGO.
is that plain enough, Truther, what was born is not the body that shall be, verse 37... it's different, but the same in apperance.... (smile). oh how so easy explain.
see this is why he could be on earth at the same time in heaven, "diversity". on earth in flesh which he "only took part in and was not a PARTAKER of it.... see the difference now
and yes he was full of his ownself in Spirit, hence why he said, "when you see me, (God full diversity"), you see the Father..... 
understand truther, as I have said before, when Jesus on Earth in Flesh say "MY" Father which is in heaven, he is saying "MY" Spirit which is in Heaven, as well as JESUS in Heaven as the Spirit, the Holy Spirit say "MY" Son on Earth is saying "MY" Body on Earth for Jesus in flesh is the BODY of God the Spirit whom we cannot see, God's body is now MANIFESTED to see, as wel,l..... in us, here on EARTH.
so Diversity answer all these so called hard or mystery question with ease. it eliminates any separate person, (because he is the equal "share" of himself in flesh which is found in the OT clearly. it eliminates not only separates persons, but any distiction. that's why some trinity believers is saying now the titles are interchangable. they see to light at the end of the tunnel....... :) but yet they refuse to give up the lie. is it embarrassment? at being in ERROR of a doctrine that they have believed all their life? no matter, obedience is better than sacrifice.
so as the scriptures, "harden not your hearts".
truther, if you have any more question... just ask... 
PICJAG.