Well thought out. You actually read it. Thank you.
Two things: me appointing my own cabinet means nothing as that's how we always used to do it and the cabinet is ceremonial at best. They only have the authority to do what the president asks them to. They don't make laws or run the show. Even the Wubbzy, who is my secretary of state will basically just be a figure head.
Respecting the courts very specifically DOESN'T allow me to just ban people that piss me off. That's the point. Let's say you or I are president some time in the future: we can't just ban people we don't like cause we'd have to convince the courts and the Congress instead of just deciding how it's gonna be.
Balance of power. It helps everyone.