The whole conference was so encouraging because of raw numbers (over 1000 libertarians) but it was rather sad that it was more about shiny suits than debating ideas. I would have loved to give a presentation on bitcoins, spectrum property rights, and inevitable deflation of the federal reserve system to spark at least something. The Stossel taping that will be showing on Thursday was also rather sad, John Bolton was a complete tool and the crowd rightfully booed him, but I'm sure it won't play well on television.
Unfortunately, Students for Liberty tends to stay on the Cato/Reason/IHS/FEE side of things, and in an effort to maintain the appearance of consensus and consistency doesn't bring up the controversial edge cases (such as regulating the spectrum as you mention) of applying libertarian philosophy to stage, so all we get is the simplistic/cherry-picking version of libertarianism from top-down that people like Stossel exemplify and inevitably condemns libertarianism to the margins of politics. However, I had great discussions with other attendees and it seemed to be a great opportunity for networking.