Although I agree with a lot of this, I'm not so sure that replacing elite racing is the only thing that needs to get done. Yes, "every other organizational aspect of sailing is the same today as yesterday". But it's not as if the non-elite sector of the sport was in great shape yesterday. US Sailing, Yachting NZ and others arguably made their decisions because of a perceived lack of coordination, promotion and visibility of multihull sailing as a whole.
I am also still troubled about being a personal member of an organization led by people who have shown themselves to be unwilling to represent the interests of multihull sailors fairly (I'm not at all meaning to tar the MHC with that brush btw). And I'm not talking about "trashing the existing organizations", but still think there is a case for shifting the balance of influence away from MNAs towards a multihull-specific organization.
US Windsurfing might be a good model. Like the MHC it's also a council of US Sailing, but as far as I can tell is an independent organization responsible to its own due-paying membership. I would be much happier supporting an organization like that than US Sailing directly.