The Libertarian party has a lot of problems.  This meme illustrates that they're all over the place when it comes to policy.  Plus, if they couldn't come up with a candidate in 2016 that could garner more than 3.28% of the popular vote, particularly given the choices provided by the two major parties, then imo they'll won't produce a candidate that can win the presidency without a serious overhaul of their own party.