As I planned, my next step was hover effect. The idea: make other wires goes to semitransparent, so in a final version, that would make to see the wire you’re looking for easier.
I’ve also made a grid appears, just using a def and two patterns. I’ve tried to use snap from interact.js but I’ve been missing something because don’t snap where I want to, so I left this point to another moment.
As always the url is the same: