I agree with everything you wrote. It is obvious that these shuttles are much faster than those from last week. Just look at the number of too long lifts and the average match duration. Shuttle speed varies and of course some speeds suit some players better than others. The best players are indeed those that are able to adjust. But that doesn’t mean that a player can’t have a preferred shuttle speed. VA is best with the slower shuttles. Bonus info regarding the test: The guys in the Danish studio (which includes Joachim Fischer) tested the shuttles after the first day of matches. They said it landed around 100mm short of the back line. I would not be surprised if they change to a slower shuttle tomorrow.