this is a development class, and what is good today will be old tomorrow.
This statement is only true if you happen to be one of those people who feel they can only compete if they have the newest of the new.
There have been no changes since I have been around that really could have been considered monumental. A very slow evolution at best. The tiger is old school hull shape without a wing mast, but still wins, Marstom A is the same. The 4.9 is still very competitive, and I have heard the Mozzie is still even up often a good bet to win races around the course.
The formula classes are interesting because it allows more people to play. For those who want to buy and go, and for those techno junkies that want to tinker. If obsolesence was ever really a problem, other than in a few peoples minds, The F18 and A classes would never have been able to grow to where they are today. These are both expressly race classes and second hand boats would hold no value.
Matt