I agree on most counts.

However, I'd also enjoy reading it if it were just a critique of libertarianism but done in an exceptionally rational way, such that if it is flawed, it will be very clear why. At minimum, I'd want it to explicitly state what terminal values or top-level goals it is assuming we want a political system to maximize, consider only the least convenient possible interpretation of libertarianism, avoid talking about libertarians too much (i.e. avoid speculating on their motives and their psychology; focus as much as possible on the policies themselves), separate it from discussion of alternatives (except insofar as is necessary to demonstrate that there is at least one system from which we can expect better outcomes than libertarianism), not appear one-sided, avoid considering it as a package deal whenever possible, etc.