The point of staying in the GOP doesn't have to be about electing a torchbearer as President as soon as 2016 (although Rand does have a shot, despite a lot of people's dislike of him and his inability to live up to Ron). Instead, it's about taking control over the GOP's resources to run a lot more Justin Amashes and Kerry Bentivolios and such. We barely have the resources to get a few seats in Congress, let alone the majority (even two thirds majority) we need. Taking over the state parties and RNC would also knock the neocons out of power in the party, forcing them to get active with the Democrats or a new third party to marginalize us again...and by putting establishment resources behind a third party, they'd be giving us an unprecedented opportunity to break the two-party system long enough to change the election laws, before the system reasserted itself in another form. Either way, if we take over the Republican party from the ground up, we're moving forward considerably.
I truly hope we do not need the constant presence of a figurehead like Ron to keep us inspired and active...if so, we are indeed in trouble, so I'd urge everyone to do some soul searching about finding a less ephemeral motivation.