Hi Dizerner. I see you have just joined the forum today. Welcome!
I am just wondering. Have you found a Scripture which states that God became a man, or any that describes a "Creator-creation hybrid".
You wrote:And so we come to the explanation that satisfied me, personally, and that is roles. The meaning of the Trinity is the roles that each plays, and without that I don't think you can find any satisfactory meshing of doctrine. Now if we assume the role of the Father is all that it means to be God, then of course the Spirit and Son cannot be God as well, since their roles are not the same.
Those who believe that the three are roles of a single Divine Individual, are called "Modalists". In the early church, the followers of Sabellius held this view. Sabellianism pre-dated Trinitarianism as a widely-held view in Christendom. A true Trinitaian believes in three divine Individuals who are somehow melded together as a compound God.
Do we then find, as some have pointed out here, something like "divine but not God." Err, but as others pointed out you can't have something "really, really, really close to being God, but, uh, not quite God." There's a pretty big gap between God and his next best creation.
When "God" is used in two different senses as in John 1:1, we can say "Jesus is God, but Jesus is not the God" without contradiction. No one, to my knowledge, is saying that Jesus is "close to being God, but not quite God." I think that may be your understanding of what some of us are saying, but that is not what we are saying. We are saying that Jesus is "the only-begotten Son of God" and therefore is the only one other than the Father who is fully divine. Jesus addressing His Father (how could He do that if He WAS His Father) said, "And this is eternal life, that they may know you the only real God,
and Jesus Christ whom you have sent.(John 17:3). By use of the conjunction "and", He indicated that He was someone other than "the only real God". But in virtue of being of the same essence as his Father, Jesus can be said to be "God" as in John 1:18, where He is called "the only begotten God". Yes, Jesus is the only begotten God, for the Father, the creator of all things was unbegotten.