Getting new orgs involved is a good goal. Getting old orgs involved is a good goal. Keeping existing orgs involved is a good goal. If this race becomes SDC vs. Fringe vs. Pika, that's not good for anybody. (By the way, I think day 2 2010 looked a lot like that). I don't recall any advice from anyone outside my group (Pika) on how to keep our org afloat and competitive when I was chair, except maybe some Spirit folks telling me to Go to Hell (which was good advice). In my case, we had lost 3 years in a row and had some malaise to overcome. Somehow we survived, and it wasn't just because I was the chairman. We pulled together as a group of men, not just as buggy dudes.
My guess is that the causes for any group to fold (fraternaties and independents alike) are the same causes that would lead them to stop doing buggy. Things like leadership, commitment, common bonds, order, respect. Sigma Nu should be very concerned for its charter, not just its buggy program. As odd as SigNu is, they still add value to the CMU campus and should get help when needed. Their loss to Sweepstakes is a serious blow, their absence from campus would be a serious blow as well.
I don't know if Sweepstakes can take on a mentorship/advisory role while simultaneously being the enforcer of rules. I'm not sure that random alumni can help orgs that aren't their own. I am trying to help ROTC because I was one and can understand their culture, but I cannot advise/mentor the Zoo because I don't know what makes them tick. I'm not sure of the solution to this problem, but I think the BAA is the closest thing to an advisory group, the challenge is how we become proactive interventionists preventing any more buggy team exits.
Lastly (I'm avoiding studying for an exam), I can't agree that SDC needs to share their goodies. It's hard enough to pass on the knowledge of how to make your goodies/techniques work from year to year (did you see Pika roll last raceday?) let alone trying to also share those precious resources with other groups for the betterment of Sweepstakes. While the socialist karma would be great, it would almost punish the hard work of orgs that get it all together. SDC has done a remarkable job, on many levels. They don't just have good buggies and wheels, but they have fast, well trained pushers. They are organized and studious with the rules (propane not withstanding) to ensure the success of not just A-teams, but all teams. The reward for level of thoroughness should not be free help for other, struggling orgs.