More hairstyles and other various things to the hairstylist.
More vanity gear that are varied enough that everyone doesn't use just one and we have clones running around.
More hunt targets and more things to buy with Allied Seals.
More areas that are bigger (on the way I know, but I long to see places like Garlemald and Doma)
A few more things to do outside of DF (I know Gold Saucer is on its way, here's hoping we get some Chocobo racing action)
Some new levelling dungeons, I know a good few people have maxed all classes, but new ones are on the way and I would love to see new instances to level em in.
More emotes and more minion interaction (I really like the idea of letting some loose in your private room and house)
More Grand Company questlines and things to buy with GC Seals.
Class specific limit break animations (I know they are changing DRG's, but I hope all classes get different animations, the effects can stay the same)
Kingdoms Hearts III event, I demand it!