Well if this be even the beginning of Pantheism then I would suggest I’m in line with both Augustine’s writings and, as Augustine points out, the “plainest sacred writings” of the Church.” I would suggest the rejection of what Augustine has stated above shows the Church to be out of wack with the plainest sacred writings. This according to Augustine.
Does God giving man the ability to procreate (cooperate in creation) intrude on His sovereignty?
Yes.
Isaiah 42:8
For My own sake, for My own sake, I will act;
For how can My name be profaned?
And My glory I will not give to another.
Isaiah 48:11
Yes
God doesn't GIVE us His Glory, He share it with us out of love! Just as Peter said, we will partake in the divine nature - and do already, in a sense. Again, you need to read what St. Augustine writes on secondary causes. We as creation do not take away God's glory, nor do we forget that He is the primary mover. However, He created us distinct from Himself, giving us the ability to be secondary causes in both the natural and spiritual realms. To deny that is to be separated from the Church Fathers that I have read.
Can you point to me a Church document that agrees with your claim? I don't find it in Carthage, Orange, or Trent.
Regards