I find it hard to commit a huge amount of cash to buying the leading design when it is nearly 30kg over the minimum and can be easily superceded by a replica made at min weight. It is a big risk when you go to resell the boats. For a Formula or a Box rule class you expect evolutionary steps that have incremental advances. Slightly better sail shape on the 2010 version compared to the 2009 version for example, rather than "revolutionary" changes that you can hardly replicate on your now "out-dated" design. This is the big risk in the class at the moment that I see.

But as a sidenote I do sail a development class, ie moth, which has these risks. No min weight, only 6 rules to talk of, fully open development. I chose this risk and was fully aware of this before making this decision and everyone in the class is aware of these risks. But I don't see a formula class having these risks in the concept of the rules.