It's a corporate franchise product and thus subject to the same corporate franchise death IP cycle that they all face. See Star Wars, Star Trek, Pokemon, every MMO, Kverwatch, gachas, etc. Game won't substantially get better or make a turnaround.

First phase: creation. Original book/comic/movie/game/whatever is created and is an unexpected hit, usually has a fairly low budget.

Second phase: explosion of popularity. The corporation begins to heavily invest in sequels.

Third phase: milking. Content is continuing to be made, but the corporation wants to increase profits by lowering costs, so the new stuff is lower budget. A lot of the original creators and writers have disappeared, usually because they've been making the same thing over and over for years and want to move on, or are being stifled by the suits behind the scenes. Writers and producers leaving is the first sign of the end. Visible people like actors leaving the show usually comes deep into the decline. FF14 has been here for several years, arguably since Stormblood when people left to go start working on FF16.

Fourth phase: death. Audience interest has disappeared.

Fifth phase: reboot. Time has past and now it's time to cash in on nostalgia/brand name recognition.