I still think you are missing the whole concept of the class and changes that have occurred in the class previously. The aim of all previous changes has been to improve the boat, making it easier to manufacture (moving away from timber boards, grab rails etc) or easier to sail (control lines) and occasionally with consumable items (sails) to improve definite flaws (3.2 oz - 3.8 oz upgrade to the sails and a few recuts). The changes have never been about making the boat faster or obtain better sailing performance. The reason for this is that it makes all older boats obsolete. Making older boats obsolete will kill the class as people who own them will be no longer competitive against those that do upgrade. The sails is the only area where a significant loss of performance occurs as the boat gets older (assuming the boat is well maintained) and while the cost of sails is high at the moment, sails are a consumable item and would need to be replaced whether you're sailing a 1 year old boat or a 30 year old boat. What you're proposing is likely to split the class, lead to a reduction in numbers at regattas and isolate clubs. It will be detrimental to the class.