What if ... After The Fall of the World That Never Was castle, the old Organization XIII, and it's world in Kingdom Hearts 2 I was just hoping that the new ruler's castle and world takeover will possibly takeover that place and rebuild their Supervillain Council with new members but It's something for KH4 to use and maybe even use as a part of the Supervillain Council in the new castle that Maleficent took over after Kingdom Hearts 2
The New Supervillain Council chamber for the New World that Never Was inside Maleficent's New Castle on The New World That Never Was so they will whatever it takes to what the Organization 13 couldn't starting with the Black Box and The New 7 Princesses of Heart even with The Core as their helper and to fix Grievous they will remodel him as a robot instead of a cyborg (since Obi Wan Kenobi burned his organs and left him for dead in Star Wars 3: Revenge of the Sith)
1. Maleficent (and Pete as her headman)
2. NegaDuck
3. The Horned King
4. Magica De Spell
5. Bradford Buzzard
6. Steelbeak
7. Sa'luk
8. Scroop
9. King Andrias Leviathan
10. General Grievous (after being reborn and rebuild)
11. Darth Vader
12. Dr. Doom
13. Demona
14. Commander Lyle Tiberius Rourke
15. Obake (Big Hero 6)
Maybe even including Thanos as you see this new post because its good to think about what's going to happen to Pete and Maleficent and the rest of the new villains after the 1st 2 original council members saw the Black Box in the background in Kingdom Hearts 3 and what to do with it now.
So each villain can have their own chair to sit on while they have their own meetings from time to time.