I'm really not displaying any brand loyalty, but I like the idea of something like the Nacra 17. It is separate enough that it risks minimal impact on other classes, but close enough in parameter that it will probably bring more competitors to the 16 and/or 18 foot classes. It can have it's own complete rule set and not affect any of the existing successes but I can see that teams will probably sail between two classes for training. I would just be a little concerned that having a subset class with different rules within F16 or F18 would create a real mess.