Looks to me like the GOP has been turned into part of the DNC without the libertarians having much to do with it. The “conservative economics” don’t appear to be represented anywhere. Romney as libertarian is absurd. He has never identified as such, and is not embraced in any way by libertarians of any party.
Just as this thread and many threads on freerepublic proves, libertarians are the commandos of the left, by using a vocabulary that mimics conservatism, they actually defend and promote the left's social agenda among conservatives.
The only place that you can find freepers expressing pro-homosexual support and open borders support, and even pro-choice views, is on the libertarian threads.
Romney was late to discover the usefulness of libertarianism to explain his liberalism, and by the time he did, he was having to deal with a conservative base and try to convince them that he wasn't actually pro-abortion and pro-homosexual agenda, but he did learn to use the libertarian talk to protect himself on decisions that he made as governor.