(First, sorry if my english is bad). Hi, I'm here again because I have more suggestions. I have two other posts in this forum: (If you want to know what I asked for, see here: "1", "2"). I hope SE read at least the one about the Viera race (in "2").
1. Minions: Odin and Behemoth (the two Notorious FATE monsters) have their own minion and mount. Maybe the new ones (Coeurlregina and Noctilucale) can have their own too.
2. Seasonal events: In future events (like All Saints' Wake or Moonfire Faire) include more FATEs and more activities around all Eorzea (maybe even a seasonal Boss FATE? Fight a living Giant Pumpkin for Halloween xD).
3. Set of Primogs: I don't have this minion yet, but it seems they don't play music... Could you make them to play music through an emote? And which themes they can play? Well, I thought in "Primogs" versions of iconical themes from all the 15 Final Fantasy main games (one per game, Prelude from I, The Rebel Army from II...).
4. Valhalla II: I loved the design of the Valhalla city in XIII-2, that empty and peaceful abandoned city. I would like a visitable location in a future expansion which resembles that city in appearance.
5. A new seasonal event: To celebrate the anniversary of the first Final Fantasy game (the birth of the series). In-game, it could be a festivity to an old legend or an old fairy tale.