He might make a decent Commerce Secretary.
There are two aspects to consider (theory and practice):
1. Trump’s stated policy positions.
2. Whether he would do what he says, if elected.
You judge Part 1 on whether you agree with what’s he saying. IMO he’s saying the right things on immigration, 2nd Amendment, and foreign policy.
You judge Part 2 on things like the testimony of people like Jack Welsh who have done business with him.