"It's the muffled part that's in need of repair, don't you think? If libertarian hard-liners would ease up in regard to the environment and drugs, don't you think the party would gain appeal to a broader audience? Do you think there are other major points that could be addressed other than the two I mentioned?"

Probably. But then they'd just fracture between those who wished to be Democrat-lite vs Republican-lite. It's as Z opined early-on and accurately--libertarianism also has its pseudo-pinkos on one end and its cryptofascists on the other.

Big-"L" Libertarianism is a sort of garbage pit of people pi$$ed at the major parties' lack of integrity (Republicrats are demonstrably vote/power whores). But Libertarians will never agree on any universal set of pragmatic goals for governance. We're all fine with theory, its the reality that slays us. The whores will win the pragmatic arguement everytime.