@Macabeus I'm not sure why you keep focusing on the incarnation and using it to cover for the fact Jesus is over presented as less great or less authoritative as the Father. I specifically mentioned stuff which applies to Jesus before the incarnation and after His ascension, so I don't see how the incarnation is a valid excuses for the points which I brought up and you have yet to address.
Also, it seems that you impose a number of extra-biblical assumptions on the holy scriptures which taint your interpretation. For example, scripture does not say that Jesus has two natures (though it says He is a man and He is our God, it does not use natures or metaphysics to describe this), or that He possesses all the "divine attributes" (whatever those are). Nor does scripture say that the three persons are one being, or even one God. And it doesn't follow that something which is called theos/elohim is the one true God, because angels, kings, and even Satan are referred to in that way.
Now there is one argument of substance that I think deserves responding to, and one which I need to spend more time studying in the word of God:
I take it you are referring to Isaiah 44:24:
Notice that the pronouns are singular: e.g. "I" and "myself". In the Hebrew for the verse you also have singular verbs. This shows that a single person is speaking here. For example, when Jesus refers to Himself and the Father together He says "we" and "our", not "I" and "my":
Moreover, I'm not aware of any clear instance in scripture where singular pronouns are to refer to multiple persons at once. One would need some good evidence to think singular pronouns can refer to a multiple persons at once in order for it to even be plausible to interpret Isaiah 44:24 as referring to both the Father and the Son. And even if you think singular pronouns could refer to a multi-personal being (whatever that means exactly), you would have to admit it is at least slightly odd that singular pronouns are used with regard to the Creator in Isaiah 44:24, but in Gen 1:27 we have a plural pronoun used.
So how then are we to reconcile Isaiah 44:24 with the fact that both the Father and the Son were active in creation? Well, first we can look at the context of the verse and see that the LORD is setting Himself against idols, and hence it would seem that His primary purpose in 44:24 is to dispel any notion that any of the idols of the people created anything. That's why He says He made "all things", leaving no room for the false gods to have made anything on their own. Moreover, His saying that He "alone stretched out the heavens" and "spread out the earth by myself" could be understood as saying that He did it without any involvement from the false gods that the people of Israel were turning to and making for themselves.
Alternatively, one could make a distinction between different roles in creation. We see in the NT that from the Father are all things, and through the Son are all things (e.g. 1 Cor 8:6, 1 Cor 11:12 (notice that 'God' here means the Father as usual and as in verse 3), Col 1:16, John 1:3). Hence one could say that from the Father alone (and by Himself) are all things. Also, the picture I get from Hebrews 1:2 is that the Father is the Creator in the most proper sense, with the Son being the instrument of creation who was used *by the Father*. That would seem to be why it says "through whom [Jesus] also he [the Father] created the world" (ESV, but the point holds in other formal translations). Moreover, Jesus Himself refers to the creation as being "God's [the Father's] creation" in Rev 3:14.
Such a distinction may seem contrived, but I think scripture often speaks in such a way, for example when Jesus said that the Father judges no-one at the final judgement:
yet we see that the Father is also said to judge at the final judgement (John 8:50, John 5:45, Rom 2:16). The way scripture explains this is that "God judges . . . through Christ Jesus"; the Father is the ultimate judge, whereas Jesus is the immediate judge who judges on behalf of the Father.
Other examples could be given, such as Deuteronomy 32:12 saying that the LORD alone guided the Israelites, but we in fact know that the Israelites were guided by people such as Moses and Aaron. Also, Jesus says to call no man on earth your father because you have one Father, who is in heaven. If you want more examples then I thoroughly recommend section III of Joseph Hallet's "The Unity of God . . .", which you can read online:
https://books.google.co.uk/books?id=TJ5bAAAAQAAJ&dq=Joseph Hallet unity of God&pg=PA16#v=onepage&q=Joseph Hallet unity of God&f=false
In particular, scripture has a theme of ultimate vs. immediate. God was the ultimate leader of the Israelites, while Moses was their immediate leader. God is our ultimate Father, but we have immediate human fathers. The Father is the ultimate saviour and Jesus is the immediate saviour. The Father is the ultimate ruler (or most high God or "only sovereign"), and Jesus is the immediate ruler (or Lord/Master/Boss) (1 Cor 8:6, Eph 4:6, 1 Tim 6:15, 1 Tim 2:5, Jude 1:4). In a similar way, one could interpret scripture as saying the Father is the ultimate creator, and Jesus is the immediate creator and/or instrument of creation. Hence when the Father says to be the only Creator, it can be understood as meaning the only ultimate Creator, just as when He is styled the only (ultimate) Father, or the only (ultimate) saviour, or the only (ultimate) God.