Thank you for your opinion.
Indeed, there are various styles and layouts when using Joplin. For example, my layout is here.
I use Joplin in 3-column layout. Since I love Outline plugin, the middle column is shared by NoteList panel and Outline plugin. Both are so necessary and indispensable to my workflow that they share a precious place.
For me, NoteList is a valuable information source. Since I manage multiple projects and have many daily-changing TODOs, I want more notes displayed as possible, even if the area is very limited. So, I need slimmer note list items.
I have one more story to tell. I also have a tablet PC with a touch screen display. With this PC, wide note list items are desirable.
Since I have several different requirements, I choose "Sometimes, Yes. (Selectable/Configurable) (selectable or configurable)" in this vote. I believe that the extensibility for freedom of choice is one of the most valuable virtues of OSS like Joplin.