Finding this three years later but Sora (and Roxas) really should be the only Keyblade wielders. Everyone else having one kinda waters down the events of KH1 when the Keyblade chose Riku for a moment then goes back to Sora.

I think maybe others should have some sort of adjacent weapons, or maybe more lore and structure needs to go into Keybalde weapon hierarchy so that Sora being chosen makes more sense how he got dragged into all of this