aaaaa this is late but maybe it's not TOO late ... (my computer was broken and travel happened gomen)

BUT SORA WOULD DEFINITELY WANT TO GO ON THIS. he doesn't have most of the things needed but he's definitely 100% up for exploring and helping anyone out with anything he can, considering he has his keyblade and the magics that come with it. he can help explore or defend against anything dangerous that pops out or whatever else.