What is logically or scripturally implausible with this following understanding of the relationship between Jesus Christ and God
Firstly, we know of corporate entities consisting of several in charge persons (such as a parliamentary government or a triumvirate or a joint-owned company). The managing body (the coalition caucus, the triumvirate itself or the board) is called its "head" . Individual members of the governing body they are a member of may speak for the body, and make pronouncements for the body. Individual members of the governing body may be commissioned by the body to perform some action.
An individual from within the body may say either, "The Board requires that such and such be done." Or maybe ,"My instruction is that such and such must be done. When a member says, "I instruct ..." or "My instruction is...." he is not thereby claiming or implying that he is the only person running the show. When a different person on the board says "I require that such and such be done," he is not thereby denying the equal authority of the first member. But both members orders must be with the approval of the board to be valid.
There are several divine Persons in the Godhead running the universe. When One speaks, He speaks for All with the approval of All. The fact that it is the Son speaking commanding His will in His own name ("This is what I command...") does not logically imply He is claiming to be the only person in command. The fact that the Son speaks in the name of the entire Godhead ("This is what Yahweh says...") does not imply that Yahweh must be only one Person in Yahweh.
Unlike any other "board" the divine Persons in "Yahweh" have a unique degree of perfect unity of purpose and knowledge, so that they act in unison and agree unanimously, as if they were one person conversing with himself and making decisions. Wanting to convey this perfect unity, not being a board who argues and debates with internal power struggles and political manoeuvring, Yahweh refers to Yahweh using the words: I, We, My and Mine.
Secondly, we refer to the one who generates something are the father of it. Yahweh is the generator of all things, through the Word commanding what Yahweh willed, and the Holy Spirit shaping what came into existence at the Word's command. So, in one sense the Son is the everlasting Father of the things He speaks into existence. and in another sense Yahweh is the everlasting Father of all things Yahweh agrees that the Word should speak into existence. There may also be a third Person in Yahweh who is designated within Yahweh for a role that is more fatherly, the chairman of the board, voted in by the rest of the board, who is referred to sometimes as the Father. Since we have at least three possible referents to "the Father" in scripture, in reference to deity, we should be free to determine which one is meant when it is used in a particular place in scripture, based on logic and context and Holy Spirit illumination.
If we study your scriptures in the light of my explanation here, they do not prove what you are reading into them based on your rather limited acknowledgement of the nuances of language as it is actually used in real life.
Isaiah 43:10
Authorized (King James) Version
10 Ye are my witnesses, saith the Lord,
and my servant whom I have chosen:
that ye may know and believe me,
and understand that I am he:
before me there was no God formed,
neither shall there be after me.
Father is one and shares with whomever Father chooses to. First start of that was, Noah in the flood and first government
Abraham in the promise of our now known Messiah Jesus, that no one understood, how it would ever play out. Not even the disciples who saw him crucified and then risen, as well as still had to get this explained to them starts in Acts 1. Yet Disciples carried on even after Pentecost in not really understanding the entire truth, and did not take this truth to all as were called to do.
So, God got Saul to be Paul to express the culmination, dispensation of it all for us all.
to sort out all truth from day one in the fall of Adam the first for us to see the promise to Abraham fulfilled in risen Son, Adam the second
God loves us all, yes even you too. Start right there and begin to see new and learn from Father and Son as won for you too. Be new in love and mercy to all too, thank you John 13:34