So rather than whining about an SL16 or an F-12 or spinnakers or anything else, why not get out the calendar and put down just ONE youth event in your area this year? You're reading this thread. That means YOU are the one that is going to have to do it.
South Florida is covered. As I already mentioned, we are hosting a youth-only Wave National Championship over Thanksgiving Weekend in the Keys.
Some people have already pointed out on this thread that every area has to work with whatever boats are most available locally -- in South Florida it is the Waves. Fortunately, the winds in the Keys are usually enough to make even the Waves a little exciting.
It's a great venue for kids and whole families, because Founders Park has all sorts of other amenities, too -- an Olympic-sized swimming pool and diving pool, a great skateboard park, basketball court, tennis courts, golf driving range, baseball and soccer fields, bicycle/jogging/rollerblade paths, kids playgrounds right by the beach.....
In addition to that, Chip and Barb Short have made great strides with their sailing programs at Founders Park. They have both private and group lessons available on a year-round basis, and their youth programs have been very popular with the local kids, some of whom have become regulars who show up every week. In the summer they have sailing camp programs for the kids.
Programs for kids on Waves are also available at Scott and Dior Hubel's Performance Sail & Sport up in Melbourne, FL.
When a venue has boats available and offers sailing programs and offers a youth regatta and the boats have two hulls, it would be pretty destructive for the sport in general to say, "We aren't interested, because you don't have fast boats with spinnakers."
I could go on for pages about all the things you guys have talked about, but I will spare you the agony of listening to my opinions. As Peter said, the important thing is to DO something, rather than just talk about it, and talking is what people have been doing for at least 20 years. The "kids" when the talking started are now 35 years old.