
Originally Posted by
MikkoAkure
They've been pushing nostalgia and old FF characters since ARR, this isn't something that's suddenly happening now. Ultros, Gilgamesh, Yojimbo, Cloud of Darkness, Cait Sith, Diabolos, Anima, every single boss from Omega's raid, and a number of the FFXII cast have all been pulled right out of their FF games, appearance and sometimes even personalities intact. The 5 original races are pulled directly out of FFXI with the serial numbers scratched off. Viera are directly from FFTA/FFXII with the same exact lore per the creator of the Viera, and Hrothgar can be made to look exactly like the Ronso (with back problems) from FFX. Gunbreaker uses FFVIII gunblades specifically because Yoshi-P thinks that Garlean gunblades that are just swords that shoot bullets aren't cool.
The Magus Sisters in XIV are primal summons, which like every other primal summon in the game, have a presence in other FF games as summons or enemies and look nearly exactly the same each time. Even the Garlean Empire is heavily based on the Gestahl Empire, and a bunch of magitek comes straight from FFVI with the same appearance.
Yoshi-P specifically said before ARR was released that the game was going to be a "Final Fantasy theme park", so this isn't a surprise and it's a part of the DNA of the game as fanservice for players of the series as a whole.