Mark,
I agree with you totally. The multihull community needs to be proactive and go on the offense instead of always playing catchup and on the defense and complaining after the fact when things don't go their way.
Instead of begging to keep a multihull event, we should be promoting TWO multihull events -- as you said, one for men and one for women. Tornado seems to work well for the men, so what about the class that would work for the women? I don't think ISAF will accept a formula class. But why not a one-design class that is part of a formula class? But would that end up destroying the formula class?
I still think that the SL16 would work for the women's multihull class. And that's IF that class can get International status.