this is a horrible decision. i agree it was hard to see whether a pitcher's back foot maintained contact with the ground the entire time. but this cure is worse than the disease! you will definitely see more leaping, which is an advantage (you're closer!), including some who will not even try to keep the back leg down and will throw like a flamingo off of the front foot (i've seen it, it works). and you will for sure see a lot more replanting - again, it's hard to see so no one will call it. I can see it quite easily, actually, the pitcher very clearly looks to be in "two parts", there is a hesitation halfway through for the replant and then the pitch is delivered. they are making a mockery of the purpose of the pitching plate, that this is the anchor or base from which a pitch should be delivered (like in baseball). if the pitcher's plate is now merely a launchpad to go wherever you want (within the circle), then that's deviating from the original intent and integrity of the game. this is horrible day in FP SB imho....