I see your point here, but all voters in your mockup presented the Libertarians as their first or second choice. As a compromise candidate, that's not a bad opt

I see your point here, but all voters in your mockup presented the Libertarians as their first or second choice. As a compromise candidate, that's not a bad option. Further, I don't think real-world voting would match up exactly with the above. There are people that would vote R/D/L and D/R/L, both of which are lacking from this example that would swing things away from the Libertarians.