On Mac, to set a nice, readable line width, you have basically 2 options: 32em, and 40em. 40em is kinda too wide, and 32em is kinda too tight, and I’d really appreciate if I could set the line width more granularly.
The current line width slider allows you to set the width to be absurdly wide. I mean, you need an ultrawide monitor to actually see the full line widths of the highest setting. I understand wanting to go to something like 50em, but 130em is just unreasonably wide and probably something no one ever uses.
My suggestion is to lower the max width to something more reasonable, set the minimum (32em) to something like 28em or 30em, and allow setting the line width in 2em increments. Or 3em, maybe max 4em.
Or even better, allow us to input a specific value. It could be nice hidden advanced option where you just click the number value and it allows me to edit it.