As of now, enabling this setting applies it to all of the 7 fields and I propose it'd be made possible to apply it to individual or all fields. Exactly the way "max. row span" is currently working.
I need this setting enabled to make one of my fields display correctly. However, when it's enabled it also makes the <artist> tag display not only the main artist but also the performers in their own row beneath the main artist, something I don't have any use for.
I could display the main artist using another tag, like <display artist>, but in doing so I lose the ability to link artist to library filter, another setting that I find very useful and would like to have enabled.