According to you there are none. I am glad to take your word for that fact. The Republican party does nothing for Libertarians because Libertarians and Republicans share no common ground. Certainly George Dubya Bush is not stupid enough to go after handful of the votes cast by Libertarians. (fewer than 400 thousand in 2000) when Republicans and Libertarians have nothing (not even three things) in common. It would cost tens of millions of other votes to get less than half a million Libertarians. No party that garners 50 plus million votes would adopt positions held by less than half a million voters.
You make my point which is Libertarian party membership is held by people who see no common ground with the Republican party. You obviously believe that Republicans have taken fewer than three positions which libertarians could support. You defy me to name 3. You obviously take the position that Republicans pass no legislation that Libertarians can support. You make my point. There is no way a Libertarian will ever vote for a Republican. You and most libertarians feel there are not even 3 things on which Republicans and you agree. That is why the Republican party should and does ignore the Libertarians. It is obvious that you and all Libertarians believe the Republicans and you hold no values in common.
That is what makes libertarians irrelevant. My point is Libertarians constantly claim they can effect the outcome of elections. They do not effect outcomes in any way. Libertarians will vote for the Libertarian candidate. If there is no Libertarian candidate they will not vote. or they will will split there votes. Some libertarians that do vote will use the no difference argument. They will spit their votes. Those few that do acknowlege a differnce will split their votes out of spite. In all three situations Libertarians have no effect on the outcome of elections.
That is why they have zero effect and are totally ignored. Libertarians have zero power. Nearly everyone in both major parties and the media are quite aware of that fact. You make that point very well.