In my experience libertarians are as ossified in their thought as any other ideologues are.
I recently approached a Libertarian publication about a macroeconomic proposal I have developed. It is utterly nonideological--at bottom, a different way of supplying the economy with money (as currency) that would make that a fully exogenous variable, bringing stability to this chaotic economy.
In my query I briefly summarized its specific benefits: the existing economy would become fully self-regulating; no unemployment or poverty; the opportunity to do away with taxes and public debt for funding all government (central to local); sustainability would be increased. I noted that since all that could be accomplished "without imposing any costs on employers, without redistributing anything, without imposing any limit on income/wealth, without additional regulations, and without requiring people to act any particular way, then surely celebrations are in order" (from the libertarian point of view: having that monetary paradigm in place would not prevent political activity that might result in outcomes that were otherwise, such as further regulations on behalf of sustainability).
The editor of the publication, to his credit, agreed to read my offering at least, but before anyone there had had the time to read it other people reacted as though I had suggested doing away with private property. (They were apparently ccing me without realizing it.) They adamantly insisted that my proposal is contrary to all possible Libertarian thought and should be immediately and wholly rejected by them, which it was.