I am yet to play Type-0 but I feel like they should have some reps
Personally I want Balthier from XII. Also Gabranth has to make his return, of all the old cast he's the one I want back the most.
Other ones I want to see are Riku (FFX-2) and 2 reps from FFXV, Noctis of course and whoever. I mean probably not one of his bros tbh.

caius ballad

One of my favourite ff villains who isn’t already in the dissidia series, I’d also like to see him in kh 3.

OH SHIT YES!!! How did I mis this one =D

Zack ,myself from ffxiv

I know right, and with lightning already in the game we could use a ff 13 villain in the game.

Plus he'd have a awesome moveset.

Hmm, since they're adding Ramza I think its only fair to add Delita.

Would love to see Beatrix from FFIX show up as well, always liked her!

Freya might be good combat wise as well.