Can the display of the paths get smaller as we zoom in?

[mhansen]

Someone asks:

And a minor improvement – can the display of the paths get smaller as we zoom in?

I'm not sure if the library I'm using supports this. Worth a look probably. I think I remember I had to set a line width in real-world-units and balance having it look OK when zoomed out with having it look huge when zoomed in. Maybe there's a better way to do it now with the library?