I am a music producer by trade (billboard charts... not video game)... and I say we are ruined by the trends of the industry
Game music has gone a lot more modern as of late. Yet the world of Eorzea doesn't really conjure up thoughts of electric guitars and drum machines
A lot of games music even uses rl songs in their soundtracks
The environments in this game are very basic... very back woods. which limits the composer greatly.
we've kind of been spoiled by the steam punk induced RPGs of the last 10-15 years.
Some of the environments in FFXIV are downright "Deliverance dueling banjos" worthy
as far as seeing concept art as opposed to actually being in game before you make the music....
How much of a desert do you really need to see? the first time I stepped into thanalan... at that moment I saw everything there was to see in the desert

Lastly... and this is very important.... How many hours have spent in Ul'dah? thanalan Desert? La Noscea? These songs will eventually annoy you no matter how good they are
I LOVE the Mor Dhona theme... but 8 hours a day of it would force me to mute the music....
I make songs 3 minutes and 30 seconds at a time... I can't imagine making a never ending loop of music

A compromise would be music that plays in each area changes based on the weather... or day and Nite
So there would be Thanalan Sunny daytime music and Thanalan Sandstorm Nite time music, for example.