We just saw the A Cat-World with 100 sailors participating. A Tornado is/was basicaly a B-Cat. Tornado International Association could morph into a B-Cat Association, customizing existing rules to include other 20's and trigger research from boat designers and builders. The challenge will be to favor affordable solutions without pledging innovation. With today IT possibility, I feel confident it is possible to develop cooperative project via Internet to achieve the best trade-off between cost and performance. It is also possible to imagine "Spare-parts Bank" involving standard carbon cross-beam, rudder, centerboard,boom, mast.... If so, innovation can be very cheap as it will be possible to focuse on hull & sail design only.
Cheers
EK
The Tornado is one of the B Class Catamarans that were at the 1967 Olympic Trials to choose an Olympic multihull platform. The were quite a few others there, some still existing classes today such as the Dart.