Baron Montesquieu, Voltaire, and Jean-Jacques Rousseau were British? Who knew?
Also, you might want to find a summary, Luee, of the Federalist Papers which set out why we rejected a parliamentary system like Britain's (and ixnay on the "benign momarch" thing, too).
The framers of the US constitution wanted divided sovereignty. They wanted a separation of powers in which some powers of governance went to the executive branch, some to the legislative branch, and some to the judicial branch.
They most definitely were not interested in evolving from the British system, with its concentration of power in a single branch.