Maybe good... maybe bad!!!
I agree and it's very good to see that 2 or 3 years boards and sails are still competitive. It's very good to stop that paranoia of changing boards every year.
But the bad thing is that now we see the pros going to championships with 3 or 4 boards and choosing the best one in the last minute to the conditions of wind and sea. I agree that the small changes can create benefits to specific conditions, like the 160 for high winds and the 162 for light winds.