We are about to see a long-standing premise either be proven or refuted. That premise is that putting nothing but businessmen in the highest positions will allow the government to be run like a business. Presumably this means better decisions and better use of money. 

Whether you agree or disagree with this premise, or whether government can or should be run like a business, we are about to see it tested. That will be interesting in its own right. 

The problem, of course, will be to decide what "better" means. 

More services and benefits for less taxes?  Hard to argue with that. 

Less taxes and less services/benefits? That's very arguable. 

One metric that will always work is to judge how the national debt changed from entering office to leaving office. It's a dollar amount and it's not arguable. It clearly doesn't tell the whole story, but it's an important one. I'll be watching that one come the next election.