Matt, you have a major bias on this point, imho.
MY point is that I'm sure as hell not a 'likely caucus goer' in the GOP primaries......UNLESS someone extraordinary like Ron is there. We have a UNIQUE candidate profile, of someone whose most fervent supporters are apathetic towards the rest of the GOP process, at best, and many need to change registration. YES we need to get those who will be there regardless of who the candidate is to open their minds to Ron, but we also need to get the attention of those who would sleep through the election, much less the registration cut off, if they didn't know Ron was running, or who Ron is.
Again, you are entitled to your opinion, but if this charges people up to get into the campaign, why come down on it so hard, even if you personally would spend the money differently, if it were your money, which it isn't?