I was absolutely friggin' delighted by how much headcanon got confirmed by 3Ds. Time goes by differently in different worlds, check. Riku keeps breaking the laws of reality (seriously how do you turn yourself into a Dream Eater Riku, how does that even work), check. Ven, Xion, and Roxas are still kind of kicking around in Sora, check. Sora makes the same mistakes he did in CoM 'cause he doesn't remember making them, check. Riku remembers Terra, check. Kairi will be trained in epic asskickery, check. So much confirmation!