Very nice! I’m making one for NYC subway. It’s still in-progress and animations need a lot more work. Next steps was to adjust the size and overlay it on a proper map.
This is great - thank you! There is no background map (Firefox) but its still very clear and fun.
PS. If you are taking a feature request, I immediately double-clicked on my line to try to focus only on that (i.e. hide all the other lines). So that might be useful for others.
https://donohoe.dev/subway/map/