We got Ozma already in Weeping City of Mhach, so my next wish would be Yojimbo for reals. I genuinely hope that his pitiful display in the lvl 70 dungeon is not the last we see of him. If it's not meant to be, then I would settle for The Magus Sisters- I feel like they get forgotten a lot, but they're one of my favourite summons.

Just please no more VII. I can't stand Sephiroth and Cloud after all the re-hashes, spin-offs, cameo appearances, and playing the game myself and dealing with their issues all game long.