Really wish they had some better open world mechanics, the lazy but easy example would be GW2. Naturally GW2 does have a more open world focus, so it's easier for them to do their main goal- but yet still.. I think FFXIV could do better and that's be one example to look at.
Shurrikhan made a post on ideas people might want to see, perhaps people can start to fill it out..
https://forum.square-enix.com/ffxiv/...threads/484713
Some quick quips might be:
- make the hunt log a content piece, with bonus first time kills, log, and weekly bonuses
- improve the dynamic nature of FATEs, so they scale better
- add more modes / interpretations of FATE (look at GW2)
- apply decent rewards in some format (weekly locks make sense, could even be like use either the instanced book or the open world book lol)
- beast tribe in demand, like custom delivery NPC have
- reduce leve capacity, increase reward
- Choco hot and cold?

- improve movement mechanics so make navigation fun (not hold w to destination due to relic flying mechanics)
- open world mini games (like GW2 puzzle activities, toss em into gold saucer once you unlock them)
- improve side quest rewards, I have like half the side quests of EW incomplete because their reward is absolutely horrible