So you have a case structure with a bunch of cases where wires proceed straight across unbothered. It could be a state machine with a state queue and error cluster and some persistent state information. It could be a DAQ module action engine. It could be a state case where you pick one of several wires to do something special with and pass all the others through. It could be a bunch of things, hardly matters what.
Wiring these is tedious, a source of error, and distracting in reading.
I think a better way would be to use pairs of tunnels, one in on the left and one out on the right. If the output tunnel of a pair isn't wired for a case, it acts as being wired from its paired input tunnel. These would set up and edit a lot like shift registers - you can link them the same way, and they slide up and down together, and they get a special visual appearance: instead of an up-and-down arrow, both sides would, perhaps, get sharp right-pointing arrows.
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