I'm not that crazy about the "kingpin" concept, either.   

We, supposedly, do not elect "leaders" in this country - at least in our Legislature, and arguably in our Executive branch either - we elect "representatives."   We are a constitutionally limited democratic republic.   The whole concept of kings, czars, or other real rulers is basically antithetical to the concept of government of the people, for the people, and by the people.   

I'm bothered enough by the creeping in of more and more Federal Executive Branch power -- things like "executive orders," "signing statements," etc.   Then we have things like the Federal Reserve Director changing monetary policy by fiat, too.    Not only do we need to curtail the tendency to give individual bureaucrats and executives too much power, but I thin we also need to rein in the use of terms that seem to endorse our acceptance of some sort of ruler.

"Chief Oversight Executive" may take more ink, but let's hope that it's more apt description of what powers Congress and the President want these bureau heads to have, and I think we'd do well to call them something that reflects that.