Maybe it has already been proposed here, I scanned this thread and I think I didn’t see it yet, but…
Something that would be very useful to have, in addition to portal links, is ‘Bundler nodes’.
Where you can connect multiple wires to the ‘Input bundler’, which then is connected via a single noodle (or even portal link) to an 'Output bundler" where you get all the bundled nodes out again as sockets.
crude mockup:
This could rather declutter the circuitboard-like look of some node trees.