I am glad they are putting it in there! My dressage neighbors will be calling me to tell me there is a letter about minis and driving dressage in Dressage today.
We have a big farm to our left and one to our right and they are always laughing at me while I long line and drive my minis!
One of them finally took Ace seriously when she watched his Piaffe! "Wow I wish he was bigger" she said.
I had the opportunity to ride with Charles de Kunffy and I learned to long line in Germany where they use it all the time. Here a lot of trainers forget what a useful tool it is! I had the same "aha" moment when I was working with my 34" mini in the half-pass and piaffe in the long lines. Now to just figure out the flying lead change in the long line...