Mostly the limitations. Like said previously, the no whisper/tell in dungeon, locked out of FC tab in dungeon, etc.

One garden on small FC plot, though it's not that bad I guess.

Lazy players, or players that try to stifle progression.

Ventures. The items they bring back are terrible, always, even with i190+ on almost all of them. I feel like the system should/could be reworked in that you WONT get certain items above a certain ilvl. Do you know how annoying it is to spend 2 ventures and get back numerous crappy low level fish all day every day when I do it? Yeah Yeah RNG. Or, they could add in a new quick venture that greatly increases the odds of better items for like 10-20 ventures per hour.

No designated areas to flag for pvp. I'm not saying I want open world pvp at all times. But an area like WoWs Gurubashi Arena would be nice.

Not enough mounts, and most of them use the same boring music.

RMT.

Materia could be better.

ATMA.