Tanks
I can go on and on about how powerful Paladins have become when a tank is so powerful in tanking and DPS that they don't need a healer or single party member to solo a boss in a dungeon equivalent to their own level. I think this needs to be addressed. I understand giving Paladins giving more DPS tools was a good idea but giving them too much is a bad idea. They also feel that Warriors and Dark Knights need a little bit more love. They do a lot of damage but when it comes to Savage Content they can't tank it. Surely not like a Paladin or Gunbreaker can do as well as having taking stats that don't seem to make sense other than for fillers. Similar to healers and piety which isn't bad per se it just isn't a priority.
Actual things they would like to see in the game with regards to quality of life changes
First Chocobo carriers should be removed or changed to Chocobo quests player can do to help level up their feisty Chocobo somewhat like Leves which you can only do daily but with the Chocobo music playing. Of course, we don't want to make Chocobo stables unusable so perhaps using some things for the stables for FC houses to compensate for their changes such as more and different types of food you can feed your Chocobo for abilities. Also, revisiting the Chocobo levelling system when you max all your levels to 10 will give you a skill tree you can level up by feeding them rare fruits the seeds of which come from rare boss fates.
Perhaps the chat system could be updated a little and a little love. As an RPer, the ability to mistell is easy to do and this gets people in trouble with others because you have said it in the wrong channel. There should be measures taken to update the chatbox window which stops people accidentally doing this.
I love this game, do not get me wrong, but there are a few things which I hope they will change.