What are the largest issues plaguing XIV currently?

[Mansion]

Stale cycle of patch content, less and less proper gameplay traded to cosmetics (pretty, cinematic dungeons) or things that don't have a mmo rplay value (see solo instances for Bozja and Werlyt). No real challenge outside of last tiers of Savage and Ultimate, some jobs always have the short end of the stick, healing design is flawed, gear system is uninteresting. And also the lack of communication from the dev's side on some major points (healing for instance).
Since 5.X, it feels like they are doing the bare minimum for FFXIV, and moving resources elsewhere.

My main point would be: the game caters to FAR too many styles of players, but it can't be great at any of these elements while trying to please everyone. Not enough dungeons, not enough raids, not enough glamour / cosmetic systems, not enough open world content...
And a little something controversial yet brave: a MMORPG can't rely on MSQ. FFXIV has a great MSQ, but when it's done it's done, it's not MMORPG replayable content so this is not an excuse for lackluster patches for me.

[Marivaldi]

Bots are what's plaguing this game