This is a simple suggestion post. It is disorganized because some suggestions fit in many categories, so I decided to put it all here. I tried to make the presentation simple and easy to read for the community reps. I know some suggestions have been confirmed to be coming in the game, but I left them there to give more ideas for them.

Example:

Title of the feature
Now: description of the present feature in FFXIV.
Improved: suggestion to improve the said feature.

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Flying monsters
Now: Flying monsters (birds, for example) are hovering over the ground rather than soaring into the sky.
Improved: Flying monsters (with some exceptions, like swarm of midges) can rest and walk on the ground, soar into the sky far above players' heads if it wants to (** For combat: flying monsters could be reached with ranged attacks and come down for battles or swoop down repeatedly on the characters).

Seamless 1
Now: Whole regions are seamless with the same terrain/scenery everywhere.
Improved: Whole regions are seamless with terrain/scenery variations, especially near the paths that leads to entirely different regions.

Seamless 2
Now: There is no transition in terrain/scenery from regions to regions.
Improved: New "sub-regions" between regions that allow data maps to be swapped while experiencing a transition between regions.

Loading screen
Now: Black loading screen.
Improved: Loading animated pictures related with the place being loaded, with random fun facts.

City NPCs 1
Now: Almost everyone stands still, all the time.
Improved: NPCs walk around town and engage in different activities, some go to sleep at night while others are active then.

City NPCs 2
Now: All NPCs are static and permanent.
Improved: Randomly generated NPCs walk around cities with low player population. As more players come into town, these random purposeless NPCs progressively disappear.

Guard NPCs
Now: They are static and give directions to adventurers.
Improved: Actively protect the city gates/camp from monsters (enter active mode when monsters are nearby, attack them if they come too near), come to the aid of nearby players in difficulty (players in passive mode only attacked by monsters).

Reputation system
Now: no reputation system present.
Improved: Introduce new factions opposed to each others. Earning reputation with a faction decrease your reputation with another. Players would received privileges if they are liked by a faction and alternatively, they would be denied trading and could even be attacked by other hated factions. (example of possible factions: merchant caravans, bandit groups, individual freelancers, sentient monsters, etc.)

Class affinity
Now: Class affinity with other classes is not displayed and can barely be improved.
Improved: Class affinity is displayed in numeric values and starts at zero. Players can earn affinity points to spend to improve class affinities (each class having it's own affinity). Affinity points can be earned through level up, quests, purchased with guild marks, etc.

Gathering points
Now: All gathering activities, with the exception of fishing, have to be performed at glowing points.
Improved: Gathering activities can be performed at any visible resources, like fishing. Gathering points now also display a visible resource in addition to the glow. Each resource displayed shows the type of resource that can be earned at this gathering point. Performing gathering activities at non gathering points result in few and random items earned. Performing gathering activities at gathering points result in earning the displayed resource and in greater amount. (For example, mining on a random cliff side could earn the player a few random rocks and ores, while mining at a gathering points that shows iron ore would earn the player with a moderate amount of iron ores and a few other iron related items [dust, etc.])

Discipline of the Hand and Land attacks
Now: Throw stones.
Improved: Attack with their bare fists and throw stones.

Inter-discipline bonuses
Now: Very limited.
Improved: Almost all traits, skills and actions could be used by other Disciplines with the right affinity. For example, Beast/Wave/Seedkin Eluder actions from the discipline of the Land could be used by Discipline of War and Magic as well. Twelves' ward skills (Byregot's Ward, Nophica's Ward, etc.) could be used for Discipline of War and Magic with monsters' drops. Other Discipline of the Land skills as well, like Brunt Force, Ageless Words, etc. could be used with Discipline of War and Magic (only the trigger needs to be different). The same applies with the other Disciplines, traits, skills and actions can be added that gives a small bonuses to other Disciplines: Discipline of the Hand traits that reduces the rate at which clothes, armours and weapons degrade (weaver's trait would allow a reduction on clothes degradation, leatherworker's trait on leather armours, etc.), for example.

New random activities for Discipline of the Land that involves multiple characters at once
Now: none.
Improved: Random events occurs in the world, sometimes forcing players to make detours until the job is completed. For the Discipline of the Land, it could include clearing a landslide that blocks the road (requires miners), fallen trees on the road or camps (requires botanists), plant new trees and herbs in a plantation (requires botanist), clear a cave-in that blocks a tunnel (requires miners), take care of a large wavekin being transported (requires fishers), fish with large nets (requires fishers), etc. Also, obviously, each new activities would have it's own new mini-game and animations.

New random activities for Discipline of the Hand that involves multiple characters at once
Now: none.
Improved: Random events occurs in the world, sometimes denying players access to something until the job is completed. For the Discipline of the Hand, it could include clearing a wreckage, repairing buildings in cities and tents in camps, cooking big feasts during events for other players to eat, building or repairing a bridge, etc. Also, obviously, each new activities would have it's own new mini-game and animations.