"The Son restricted his nature to become flesh."
God does not reduce His nature. The nature of the Godhead remains unchanged! Your explanation would have me believe that when Jesus became a man, the Holy Spirit and the Father lose power because the nature of God is now restricted! Remember, Jesus is only One of the Three Persons of the Trinity that utilize the Divine Nature.
It would be better to say that Jesus did not display His divinity fully while He was Jesus of Nazareth. His full divinity was "hidden" from the Apostles and Jews. Because the Person of Jesus Christ is wrapped in mystery, we must be careful on our definitions.
Jesus being a little lower than angels merely means that He took on the nature of a man. Being that God is impassible, that is the only way Jesus could suffer and die, by taking on our nature. This is what the author of Hebrews refers to - that the Logos, the pre-existing Second Person of the Trinity took on the nature of man, IN ADDITION to His nature already as God. Both subsist in the person we call Jesus Christ. As Christians, we must be careful on such explanations, as they lead to un-Biblical ideas. We must believe that God became Jesus, fully God and fully man.
Regards
In this sentence you used God and the Godhead interchangably. If this is to be the accepted starting premise, then I will agree. But if Jesus as God is separate from the other 'persons' (yes, I agree much better than 'beings') of the Godhead, then I stand by my original reasoning. It is not the 'nature of God' that is resricted as much as it is Jesus as God the Son through obedience to the Father restricting himself.
We must believe that God became Jesus, fully God and fully man.
On this we agree.