Postition: The libertarians are the loudest folks at the table complaining about the corporate-government axis of control. Unlike the conservatives who complain mostly about the government, or the progressives who complain mostly about the corporations...the libertarians recognize that there's a vicious cycle in which government charters corporations, then corporations influence government for special privileges, and so on...creating massive imbalances of power in favor of corporations and opposed to everyone else.
Conclusion: At the core of any good libertarian approach to government must be the abolishment of limited liability corporations. Elsewise the structure guarantees repetition.
Position: The core problem at the center of our modern conception of the world is the relationship of the citizen to the government. Insofar as the government can force the citizenry to do as it is told...there is a problem.
Conclusion: The problem is the separation of the citizenry into citizenry and police. Abolish the police, and ALL police prerogative; deputize the citizenry. Without this, you're screwed.