Trump is operating on a very high level of 3 Dimensional Chess...trying to move enemies where he wants them, put people in boxes, bring them to his side while blunting opposition. It will be awhile before we see what he is actually up to with some of these moves/discussions.
I have seen enough in my life to be aware we can be greatly disappointed, but nothing has happened as yet to make me fearful it will happen on the big issues.
Appointing someone to a Cabinet position, then finding fault with them and firing them a few months later would be one way to remove potential troublemakers from Congress. Especially if it is a seat that a friendly Governor gets to fill the vacancy.
Filling his admin with the GOPe in the key spots will be the undoing of his admin.