If something changes it is not changeless. The clue is in the word.
An action is a change. Something that is changeless cannot act.
An action is a change in state. No amount of your or Feser's comical bullshit can change that basic fact. If there is an unchanging 'base of all hierarchies', then it is nothing like any of the multiple versions of God described in the bible. Something changeless cannot act, create, judge, interact, manifest itself, or do anything at all.
This is really simple.
Let is now outline what we must now call Strangerbollocks.
1: I am not suggesting that God doesn’t act.If you want to call acting changing then that is not in the same sense that I am using it which is susceptibility to entropy.
2: Why you have ran ahead with your own argument I do not know.
3. Contingency without necessity is what is absurd pal, not merely speculation
4: What has determinism got to do with any of this? Isn’t it just a way of saying the universe just is and there’s an end to it.
5: The principle of sufficient reason allows for internal reasons as well as external reasons
6:You have on at least one occasion tried to debunk the principle of sufficient reason by using the principle of sufficient reason.
7:Use of Spacetime.manifold. If God is at every location it doesn’t matter what and how space time is.