The competition might look ancient, but IMO, a 2D interface would be much more productive and easier to work with. This site is completely unusable for me in Firefox (it does work in Edge though).
One reason is a noncritical third-party dependency; the circuit canvas will patiently wait in line to load forever until fonts.gstatic successfully loads. Normally I wouldn't post that kind of feedback here, but there's no readily apparent way to submit feedback or bug reports at the site so here we are.
ironically maybe it's also feedback that our share feedback button is too hidden