If you had a open development Sunfish class it would slowly transform the Sunfish into what the development Moth Class looks like. In the end you would have a all Carbon Fiber Hydrofoil Sunfish that is highly technical and in no way resembles a Sunfish. Could you limit 'Tech Creep' to keep is simple and fun? Maybe. As explained earlier in the thread, a 'Classic Sunfish' class was tried but everyone kept showing up with different 'Classic Hardware, (Centerboards). I think the handicapped 'Fun Sail Race' it the best thing for low cost fun.