This is such a bizarre thread. The setting of the second half of Dawntrail is basically FFIX with different names. Yes we have Dagger; it's Real Sphene. There's more FFIX in Dawntrail than there is FFI (Warrior of Light repurposed as Elidibus + Chaos in the Omega raids; that's literally it) or FFII ("wild rose" references which are in basically every FF game + the name "Pandaemonium" being used for a completely different location) in the entire game.
You're also forgetting about Vivi in the Heavensward Hildibrand quests.