The Multihull Council was unanimous on this issue when it first came up years ago; there will be no exclusion of one class association at the request of another.
John, if this "issue...came up years ago" then there was an apparent issue. The problem was not with two classes but with hostile separation of the classes; it appears that there must have been two potential strong opinions. Solution might have been proactive attempts by US Sailing to get cooperation or, better, some coordination.
Idea though... the Class has a TON of available funds that could go to helping support conversions for entry level racers. There would be restrictions and membership requirements I'm sure.
Conversions, sounds interesting.
I would love to live 15 minutes from the water where the wind blows a constant 10 knots or more. I would love to spend all my spare time on the water sharpening my sailing skills... I don't, I can't. IF the wind were always good, I imagine the waters around here would be constantly overloaded with sailing AND the number of friendly locations for sailing would be higher in number. Lucky if you do live there. Most don't. In addition, I -- as are many who own boats -- am just average income bracket.
Because of all this, many look around for a group to sail with who own similar boats. (I have a Wave.) What is available are classes of racers in some confusing argument. My suggestion is NOT JUST to sponsor more B level racing, distance races, or big social events if that's your thing. It is to decide what you want to communicate before it happens.