I feel like the fade-out theme in XI was ideal for that specific game, but you also weren't on your mount anywhere near as often as you are in XIV. I dart around so much in short bursts that a fade out wouldn't really make much of a difference. The only time I really feel the music suitable is when leaving town via NPC. I would prefer that with no music when calling out in the field.

But that's sort of superfluous when a simple toggle would suffice for a majority of us on either camp.