This seems like a lot of discusion for something that is pretty straight forward.

If the boat is measured and does not violate any formula limits then it is a fully compliant F16. Theoretical performance has nothing to do with it.

For non-national/World level racing, where full complaiance should be mandatory, bring on anyone who wants to race. A well sailed SL16 will end up beating a poorly sailed F16, and with the exception of a hand full of people in the world this will be the case on any boat.