1. Serendipity-like floor: A new floor based on the Serendipity area from XIII-2. This floor would be at a high place in the GS, and would be at the exterior. We could even see Thanalan from there. And, by a possible technology, this place would be "protected" from weather changes like rain or other ones.

2. Shooting minigame: Based on the Stormblood new feature from some quests.

3. New GATEs, maybe one featuring Ultros. And maybe another with PuPu? Another one based on Bardam's Mettle 2nd boss.

4. New Chocobo Racing roads: Coerthas, Mor Dhona, Dravania... or a special route in the GS itself.

5. Chocobo Racing multi-server instances. I don't know if this is already in-game, but... I don't see players racing besides the ones from my own server.

6. Chocobo Racing Tournaments. TT and Verminion already hace Tournaments... Why not chocobo racing?

7. An optional dungeon set in the Gold Saucer.