US's electoral system is what it is. There are very good reasons to hate a two party system, but you are not getting a relevant third party unless the system is changed. The only way the libertarian party gets a place at the table is if one of the main parties chokes and dies so that the Libertarians take its place. But of course, if that happens, the libertarian party will be quickly morphed into a moderate, bastardized version of itself which I have to assume you'd hate.
Lose first-past-the-post, gerrymandering and the electoral college and then, maybe, diverse points of views will be somewhat represented in the US's political system.