But then you have to deal with getting the sails measured in by a certified measurer. There are definitely pros and cons to each approach.
Not as big an issue as you think. Tornado has open sail makers. Quality/consistency is second to none. As for measurements, this is only needed at class sanctoned events (nationals, worlds etc) and takes about 30 min. per boat. There are ways to stream line the process...something like a class rule that to make a legal sail a manufacturer must certify it measures in/affix a label/stamp before selling the sails. If fraud is a concern, then enforce on site measurement in official/important events.
The reason the I20's have not evolved with current trends in sail plans is precisely b/c they are SMOD. The builder needs to keep his profit margins and without competition there is little incentive carry out sail development.
