What headcanons/wishes/ideas do y'all have for the show?
Even though it seems like Malachite's defusion will be more psychological rather than physical (why else would they introduce that Steven can enter Malachite's gem realm?), I was thinking about how when they confront her, we could see the debut of Alexandrite's weapon, as well as the debut of Stevonnie as a fighter. I imagine the both of them slowly wearing Malachite down, and then, in a last ditch attempt to stay fused, she begins to fly away. Alexandrite uses her weapon, a spiked one-handed flail, to keep her from flying away. Stevonnie rides Lion onto Malachite's body, and uses Rose's sword to pierce her through her lower back. Malachite poofs into Lapis and Jasper, and Garnet basically finishes off Jasper by summoning her gauntlets on Alexandrite's hands and smashing her till she poofs to her gem. They bubble her, and then run to aid Lapis.
)
and a possible Yellow Diamond arrival? 
I thought he was like 9